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>> [Daqq tal-mużika]

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>> DAVID Malan: Dan huwa CS50.

4
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Dan huwa l-bidu ta 'disa ġimgħa.

5
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U dan huwa dak li jkollu
Kien birthday 200 Mr Boole.

6
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Allura dan huwa l-fellows
li min aħna ve allużjoni

7
00:00:17,630 --> 00:00:21,800
pjuttost xi drabi dwar l-użu
Varjabbli Boolean vera u falza,

8
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1 u 0 u bħal dawn.

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U dan kien Google
ġieħ lilu llum.

10
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Kien ikollu daru 200.

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Mela jekk inti tixtieq li
jingħaqdu magħna għall-ikel CS50,

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tagħti ħarsa lejn l-link
fuq il-websajt il-kors tal.

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U dawk uċuħ u l-ħbieb huma
dawn jistennewkom hawn fil Cambridge.

14
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Faces bħal dawn jistennewkom fi New Haven.

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U, fil-fatt, Ken fil
New Haven ġentilment magħmula

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00:00:37,800 --> 00:00:41,594
dak li jissejjaħ GIF animati ta Eli
hawn fuq riċenti lunch-- a GIF għadu

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format ieħor fajl grafika,
li magħhom int familiar-- li

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jistenna ftit xi ħaġa bħal din.

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Hekk biss sekwenza of-- OK.

20
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Ebda wieħed hawn fil Cambridge huwa laughing.

21
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Iżda fi New Haven, dan
huwa verament umoristiċi, id-dritt?

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Kull dritt.

23
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>> Allura jingħaqdu magħna hemmhekk.

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Hawnhekk fil-Harvard,
speċifikament, dan l-erbgħa,

25
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jekk int sophomore jew freshman even--
jew saħansitra ħsieb junior-- tat-tfassil

26
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bidla fis-kompjuter
xjenza, jafu li hemm ser

27
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jkun a CS jagħtu pariri imparzjali dan
L-Erbgħa, ftit wara klassi

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fi 4:00 PM tal-kompjuter
Bini Science Maxwell Dworkin.

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Aħna ser tpoġġi dan fuq il-kors tal
websajt billi għada, kif ukoll.

30
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Donuts, jien told, ser jiġi servut.

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>> Kull dritt.

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Story-- hekk umoristiċi I kien poking
madwar fuq l-internet,

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u sibt xi arkivji qodma
ta 'ex website tiegħi.

34
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U jirriżulta out-- madwar dan
żmien, jidher f'waqtu ħafna

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peress I tiġbor li l-elezzjonijiet UC
jkunu waslu biex tingrana mill-ġdid.

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So I dam għal UC, mitlufa miserably.

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U forsi dan kien parzjalment għaliex.

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Allura dan kien website tiegħi fil-ħin.

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Għal xi raġuni, ħsibt li kien
idea tajba, qabel tinforma lin-nies

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dak pjattaforma tiegħi kien u għaliex huma
għandu jivvota għalija, li jkollhom

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ikklikkja biex tidħol biex issir taf li
informazzjoni, li retrospettivament hija

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tip ta 'creepy.

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I do not know verament dak li kien.

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>> Iżda ċertament ma kienx
jgħinu kampanja tiegħi.

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I wkoll sabet li billi anzjan
year-- Kelli dan il-kalendarju Muppet.

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Muppets kienu tip ta 'Vogue lura imbagħad.

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Jew forsi dawn ma kinux.

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I kellhom kalendarju Muppet lura imbagħad.

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U ħsibt li d jkun jibred biex insemmu
kompjuter tiegħi fuq in-netwerk Harvard

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frogman.student.harvard.edu.

51
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Fil-ħin, aħna kollha kellhom unikament
ismijiet ospitanti identifikabbli.

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U inti tista 'tagħżel xi vanity
isem minflok l-isem tiegħek.

53
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U I marru ma 'frogman għal xi raġuni.

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>> U mbagħad I started-- I qattgħu ħafna
ta 'żmien tikklikkja permezz ta' dawn ir-rabtiet

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dalgħodu.

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U dan kien paġna dwar tiegħi,
li issa tip ta 'tidher adorable.

57
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Iżda huwa jixhed ukoll għal ftit
kemm it-teknoloġija wasal.

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I mean, lura fil-ġurnata,
a 486 kienet xi ħaġa.

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Dawn il-ġranet, huwa super, super,
bil-mod super u sew inqas

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milli inti jista 'jkollok fil tiegħek
bwiet tagħhom dawn il-jiem.

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Hemm aktar fuq hemmhekk li
kien saħansitra aktar embarrassing.

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So I ser jitilqu minnu f'dik.

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Iżda dan kien l-ewwel tiegħi
foray fis web-- oh, no.

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Dan ma kienx.

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Ewwel foray tiegħi reali fil-programmazzjoni web
kien dan is-sit, li jiena biss nesa.

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F'xi punt, tgħallimt kif
jagħmlu l-immaġini isfond ripetittivi.

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U hekk sibt dan tiling effettivi,
bħal player hockey, futbol, ​​u tal-golf

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ball, jew kwalunkwe li hija
għall-websajt Frosh IMs.

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U dan kien effettivament, ġenwinament il
ewwel proġett fuq l-internet I ħa on--

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I think forsi sophomore
sena, year-- junior

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wara li tieħu CS50 u CS51, wieħed
mill-klassijiet komuni ta 'segwitu fuq.

72
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I ndunat meta tħares
permezz tal-arkivji

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li wieħed mill suċċessuri tiegħi u
ħbieb, Lee, tip ta 'inbidel

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l-awtur li lilu nnifsu.

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Iżda dan kien tabilħaqq xi ħaġa li
I għandu stess l-imbarazzament li.

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Iżda fil-ħin, din
kienet l-ewwel websajt,

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kif għidt ftit ġimgħat ilu,
li permezz tiegħu freshman jista

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jirreġistraw għall-isports intramurali hawn.

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U għalhekk jirriżulta
li immaġini isfond

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bħal dik mhumiex tali idea tajba.

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Iżda l-web kien ġdid, u
konna kollha jesperimentaw.

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U dan huwa dak I
apparentament ma fil-ħin.

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Kull dritt.

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Allura mingħajr aktar dewmien, aħna jaqilbu
gerijiet llum li jtik, tassew,

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l-biċċa finali li inti tista 'ssib
speċjalment utli għal proġetti finali

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iżda wkoll li se jibdew
jagħmlu l-web dinjija kollha kollu

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tħoss ftit aktar tinftiehem.

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Tabilħaqq, aħna qed tmur biex jintroduċu
wieħed aktar lingwa ta 'programmar

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00:03:49,460 --> 00:03:52,474
imsejħa JavaScript li huwa simili
u differenti b'modi differenti

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minn lingwi konna ħares lejn s'issa.

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>> Allura C, irtirar, hija din il-lingwa ikkumpilata.

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You ħadthom ltqajna biex run permezz kompilatur.

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Ikollok kodiċi tas-sors ta 'oġġezzjoni
kodiċi, jew zeroes u dawk.

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U dawk huma zeroes u dawk li
CPU tiegħek, Central Processing Unit,

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attwalment jifhmu.

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PHP, b'kuntrast, mhux
lingwa ikkumpilata.

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Huwa dak?

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Huwa ta 'lingwa interpretati.

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Allura hemm xi program
imsejħa interpretu li

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għandu jaqra top it-- li
qiegħ, xellug għal right--

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u ċifra barra dak li kollha
sintassi tiegħek ma u mezzi,

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jekk huwa loop jew kundizzjoni
jew kwalunkwe numru ieħor ta 'programmar

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constructs.

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Allura dak lingwa interpretati.

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00:04:22,210 --> 00:04:23,910
>> Imbagħad aħna introdotti HTML.

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U HTML lanqas a
lingwa ta 'programmar.

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Aħna'd sejħa hija dak?

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00:04:28,110 --> 00:04:31,650
A lingwa markup, li huwa biss
tip ta 'mod fancy ta' tgħid dan

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ma jkollux constructs programmar simili
rajna anke lura fil-ġurnata ta 'bidu.

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M'hemm l-ebda loops.

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M'hemm l-ebda kundizzjonijiet.

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Huwa verament huwa lingwa
dwar immarkar ta 'data tiegħek

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u ifformattjar jew
istrutturar dan b'xi mod.

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>> CSS, sadanittant, b'mod simili
mhux lingwa ta 'programmar.

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Huwa saħansitra aktar estetikament orjentati.

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U dan jippermetti li inti sort ta tirfina
affarijiet simili daqs tat-tipa u kuluri

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u t-tqegħid u kollha ta 'dak.

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Imbagħad kellna

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>> SQL.

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Allura SQL huwa tabilħaqq programmar
lingwa f'ċertu sens,

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għalkemm mfassla
speċifikament għal databases.

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Iżda anke jekk aħna biss jintroduċu inti
tagħżel u daħħal u ħassar u taġġorna

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u l-koppja ta 'oħrajn,
jinstabx inti tista 'attwalment

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jiktbu funzjonijiet jew
proċeduri, kif dawn qed

125
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imsejħa, fil SQL li tfittex u jaġixxu
pjuttost simili PHP u C-funzjonijiet.

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Allura jafu li dawk jeżistu.

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Iżda aħna ma lanqas biss jitħajru magħhom
kif aħna biss tobrox il-wiċċ hawnhekk.

128
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U mbagħad JavaScript, l-aħħar tad
lingwi tagħna introdotti formalment.

129
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Allura JavaScript, ukoll, hija
lingwa interpretat.

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U dawk familjari, do
inti tixtieq li tiddistingwiha

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ma 'xi karatteristika
kemm C u PHP?

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Dak li jagħmilha differenti?

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>> UDJENZA: Mhuwiex ikkompilati.

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>> DAVID Malan: Say mill-ġdid?

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>> UDJENZA: Mhuwiex ikkompilati.

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>> DAVID Malan: Mhuwiex ikkompilati.

137
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Għalhekk, ukoll, huwa interpretat.

138
00:05:33,450 --> 00:05:34,760
Allura mhuwiex ikkumpilata.

139
00:05:34,760 --> 00:05:37,210
Iżda li jagħmilha ftit simili PHP.

140
00:05:37,210 --> 00:05:39,545
Iżda huwa għadu differenti minn
PHP b'xi mod impressjonanti,

141
00:05:39,545 --> 00:05:40,920
għall-inqas fil-mod aħna ser jużawh.

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Yeah?

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>> UDJENZA: Hija tmur client-side.

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>> DAVID Malan: Hija tmur
client-side, normalment.

145
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Dik hija tabilħaqq l-jiddistingwi
karatteristika għalina dritt issa.

146
00:05:47,190 --> 00:05:51,170
C kien server-side fis-sens
li għamilna kollox fil IDE CS50.

147
00:05:51,170 --> 00:05:53,630
PHP s'issa kien
ġenb server sakemm

148
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minħabba li kien ukoll, gets interpreted--
mhux kkompilata, iżda interpreted--

149
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ġewwa CS50 IDE, li naturalment huwa
biss server jew servers fil-sħaba.

150
00:06:00,690 --> 00:06:03,070
>> Iżda JavaScript, anke
għalkemm inti int ser

151
00:06:03,070 --> 00:06:07,000
biex tibda bil-miktub għal, ngħidu aħna, pset
tmienja u forsi finali projects-- int

152
00:06:07,000 --> 00:06:09,620
se lemin fil
IDE CS50 u isalvawh

153
00:06:09,620 --> 00:06:14,760
fil-fajls fi ħdan IDE CS50, CS50 IDE
u, min-naħa, il-servers sħaba

154
00:06:14,760 --> 00:06:19,160
li fuqhom huwa ospitat, mhumiex ser
li tinterpreta jew tesegwixxi kodiċi tiegħek.

155
00:06:19,160 --> 00:06:23,880
Pjuttost, huwa għaddej biex jintbagħtu
forma mhux mibdul sa l-browser.

156
00:06:23,880 --> 00:06:26,990
U huwa mbagħad ser tkun IE
jew Chrome jew Firefox jew Safari

157
00:06:26,990 --> 00:06:30,697
jew kwalunkwe li attwalment tinterpreta
dan, fuq għal isfel, xellug għal-lemin.

158
00:06:30,697 --> 00:06:32,780
Allura l-muftieħ ta 'distinzjoni
karatteristika għal-lum

159
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hija li JavaScript huwa client-side
u PHP, per eżempju,

160
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biss kien server-side.

161
00:06:37,690 --> 00:06:40,920
Issa, dan għandu implikazzjonijiet interessanti
għal, simili, proprjetà intellettwali

162
00:06:40,920 --> 00:06:42,660
u li jistgħu attwalment ara kodiċi tiegħek.

163
00:06:42,660 --> 00:06:44,860
U fil-fatt, inti tista 'tmur
fuq il-web u ara aktar

164
00:06:44,860 --> 00:06:47,530
kwalunkwe kodiċi li xi ħadd ikollu
miktuba fl JavaScript.

165
00:06:47,530 --> 00:06:50,230
Xi kultant huwa tinqara,
xi kultant huwa obfuscated.

166
00:06:50,230 --> 00:06:52,550
Iżda aktar fuq li fil-ħin.

167
00:06:52,550 --> 00:06:57,530
>> Allura JavaScript, nicely biżżejjed, huwa
super simili, sintattikament, li C.

168
00:06:57,530 --> 00:06:59,364
U ħafna bħal PHP,
hemm l-ebda funzjoni prinċipali.

169
00:06:59,364 --> 00:07:02,113
Jekk inti tixtieq li tibda bil-miktub
Kodiċi JavaScript, kif tkun taf tara llum,

170
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inti biss tibda bil-miktub dan.

171
00:07:03,270 --> 00:07:06,910
Iżda huwa, tkun taf tara, partikolarment
utli fil-kuntest ta 'web browsers.

172
00:07:06,910 --> 00:07:09,820
Madankollu, ftit tiegħi
disclaimer-- normalment earlier--

173
00:07:09,820 --> 00:07:13,790
kien li jgħidu li inti tista 'dejjem
illum użu JavaScript server-side

174
00:07:13,790 --> 00:07:17,655
użu ta 'qafas fancy imsejjaħ Node.js
li xi wħud mill-applikazzjonijiet CS50 stess

175
00:07:17,655 --> 00:07:18,280
huma miktuba fil.

176
00:07:18,280 --> 00:07:20,640
Iċċekkja 50 effettivament juża Node.js.

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00:07:20,640 --> 00:07:24,140
Iżda aħna qed tmur biex tiffoka fuq
JavaScript client-side hawn fuq barra.

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>> Allura hawnhekk huwa sett ta 'kundizzjonijiet fil PHP.

179
00:07:26,750 --> 00:07:29,350
Jiddispjacini, in-- fatt, li
dikjarazzjoni, wisq hija korretta.

180
00:07:29,350 --> 00:07:32,200
Hawnhekk huwa wkoll sett ta '
kundizzjonijiet fil JavaScript.

181
00:07:32,200 --> 00:07:35,560
Sintattiku, huwa
identiku għal C u PHP.

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00:07:35,560 --> 00:07:39,040
Espressjonijiet Sur Boole huma,
Bl-istess mod, sintattikament

183
00:07:39,040 --> 00:07:41,190
identiċi kemm C u PHP.

184
00:07:41,190 --> 00:07:44,100
Għandna wkoll swiċċijiet fil
JavaScript li tfittex identiċi.

185
00:07:44,100 --> 00:07:46,350
Għandna għal linji li huma
strutturati b'mod identiku,

186
00:07:46,350 --> 00:07:48,140
filwaqt loops, tagħmel waqt loops.

187
00:07:48,140 --> 00:07:49,980
>> Dan wieħed huwa xi ftit differenti.

188
00:07:49,980 --> 00:07:53,120
PHP kellu l-kostruzzjoni għal kull
li tista 'tkun tuża

189
00:07:53,120 --> 00:07:55,320
jew ser jużaw pset seba ', forsi.

190
00:07:55,320 --> 00:07:59,460
JavaScript għandha din il-verżjoni speċjali ta '
għal fejn inti litteralment ngħid xi ħaġa

191
00:07:59,460 --> 00:08:03,864
bħal per ewlieni varjabbli fil-għan, li
huwa mod qosor ħafna ta 'tgħid,

192
00:08:03,864 --> 00:08:06,780
jekk Stajt ltqajna object-- u aħna ser
jitkellmu dwar dawn darb'oħra fil-moment--

193
00:08:06,780 --> 00:08:10,370
u nixtieq li jtenni fuq kull
tal-pari b'valur ewlenin ġewwa,

194
00:08:10,370 --> 00:08:13,620
I ma jkollhom figura kif
indiċi numerikament bl żero, wieħed,

195
00:08:13,620 --> 00:08:14,580
tnejn, tlieta.

196
00:08:14,580 --> 00:08:15,900
>> I jistgħu litteralment ngħid dan.

197
00:08:15,900 --> 00:08:20,740
U fuq kull iterazzjoni, JavaScript
għalija se taġġorna l-muftieħ varjabbli

198
00:08:20,740 --> 00:08:24,810
li tkun l-ewwel ewlenin, allura l-ewlenin li jmiss,
allura l-ewlenin li jmiss, allura l-ewlenin li jmiss,

199
00:08:24,810 --> 00:08:25,510
u oħrajn.

200
00:08:25,510 --> 00:08:30,000
U nista 'nikseb fil-valur tagħha permezz ta' trattament
oġġett JavaScript, kif Ser naraw,

201
00:08:30,000 --> 00:08:32,584
bħallikieku huwa ta '
firxa assoċjattiva fil-PHP.

202
00:08:32,584 --> 00:08:35,750
Tabilħaqq, jekk inti finalment imgeżwer tiegħek
mind madwar dak firxa assoċjattiva hija

203
00:08:35,750 --> 00:08:40,140
fil-PHP, inti tista 'taħseb li għal issa kif
identika għal oġġett fi JavaScript.

204
00:08:40,140 --> 00:08:42,030
Iżda li l-daqsxejn ta '
oversimplification.

205
00:08:42,030 --> 00:08:47,230
>> Arrays tfittex, nicely biżżejjed, identiċi
biex PHP ħlief għal karattru wieħed.

206
00:08:47,230 --> 00:08:51,425
Hemm ħaġa waħda nieqsa hawn
li aħna ma tara ġimgħa li għaddiet ma PHP.

207
00:08:51,425 --> 00:08:52,050
X'hemm titħalla barra?

208
00:08:52,050 --> 00:08:53,310
Yeah?

209
00:08:53,310 --> 00:08:54,090
Ebda sinjal dollaru.

210
00:08:54,090 --> 00:08:56,240
Allura aħna qed lura għal
aktar dinja normali fejn

211
00:08:56,240 --> 00:08:58,050
varjabbli ma jkollhom sinjali dollaru.

212
00:08:58,050 --> 00:09:00,810
Imma inti prefiss minnhom
ma var, tipikament.

213
00:09:00,810 --> 00:09:02,230
U var ifisser varjabbli.

214
00:09:02,230 --> 00:09:06,440
U ħafna bħal PHP huwa laxk
typed-- biha hemm tipi,

215
00:09:06,440 --> 00:09:10,120
hemm għadd u kordi
u sufruni u għalhekk forth--

216
00:09:10,120 --> 00:09:11,570
JavaScript simili għandha tipi.

217
00:09:11,570 --> 00:09:15,470
Iżda huwa laxk ittajpjat fil inkunu l
programmaturi ma għandekx sabiex jispeċifikhom.

218
00:09:15,470 --> 00:09:18,980
Aħna biss għandek tkun taf
li t-tipi differenti jeżistu.

219
00:09:18,980 --> 00:09:21,690
>> Varjabbli, meanwhile-- hawnhekk kif
nistgħu tiddikjara "hello, dinja"

220
00:09:21,690 --> 00:09:22,230
bħala sekwenza.

221
00:09:22,230 --> 00:09:24,890
Avviż huwa identiku għal
PHP iżda l-ebda sinjal dollaru.

222
00:09:24,890 --> 00:09:27,120
U din hija xi ħaġa aħna ser
tibda tara aktar illum,

223
00:09:27,120 --> 00:09:30,990
fejn inti għandek oġġett
bil-kodiċi u l-valuri.

224
00:09:30,990 --> 00:09:32,990
U jekk inti tixtieq li jippruvaw
li wieħed jiddeduċi mill-aħħar week--

225
00:09:32,990 --> 00:09:34,730
l sintassi huwa xi ftit differenti.

226
00:09:34,730 --> 00:09:39,740
Iżda sanità ftit check-- kemm
ċwievet ma dan l-oġġett jidhru li jkollhom?

227
00:09:39,740 --> 00:09:40,850
So I tara erbgħa.

228
00:09:40,850 --> 00:09:43,560
Nara tnejn.

229
00:09:43,560 --> 00:09:44,680
>> Allura huwa attwalment tnejn.

230
00:09:44,680 --> 00:09:47,260
Allura dan huwa ġabra
ta 'żewġ pari b'valur ċavetta.

231
00:09:47,260 --> 00:09:49,820
Il-muftieħ huwa simbolu li l-valur huwa FB.

232
00:09:49,820 --> 00:09:52,620
Il-muftieħ huwa prezz li l-valur huwa 101.53.

233
00:09:52,620 --> 00:09:54,230
Għalhekk dawn huma żewġ pari b'valur ċavetta.

234
00:09:54,230 --> 00:09:58,120
U ftakar, PHP-- u dan huwa għal darb'oħra
biss it-tip ta 'differenza sintattika.

235
00:09:58,120 --> 00:10:00,170
Huwa mhux kollha li
intellettwalment interessanti.

236
00:10:00,170 --> 00:10:04,610
PHP jista 'jkollok bil-miktub dan l-istess
ħaġa bħala kwotazzjoni follows--, huwa daqs.

237
00:10:04,610 --> 00:10:06,730
U nibdel dawn biex parentesi kwadri.

238
00:10:06,730 --> 00:10:11,240
U allura nibdel dan
kelma ikkwotat, "prezz."

239
00:10:11,240 --> 00:10:12,500
U mbagħad I ma jużawx kolon.

240
00:10:12,500 --> 00:10:15,060
What did I jużaw ġimgħa li għaddiet?

241
00:10:15,060 --> 00:10:18,290
Yeah, is-sinjal ugwali
vleġġa notazzjoni funky.

242
00:10:18,290 --> 00:10:21,470
>> U mbagħad I ma l-istess ħaġa hawn.

243
00:10:21,470 --> 00:10:23,580
L-istess ħaġa hawn.

244
00:10:23,580 --> 00:10:24,240
U li kollox.

245
00:10:24,240 --> 00:10:27,752
Allura huwa multa jekk dan ma jkunx
verament għereq fil lill-memorja biss

246
00:10:27,752 --> 00:10:29,960
iżda għaliex dan huwa verament
intellettwalment uninteresting.

247
00:10:29,960 --> 00:10:31,660
Huwa differenzi biss sintattika.

248
00:10:31,660 --> 00:10:33,230
Iżda l-ideat huma eżattament l-istess.

249
00:10:33,230 --> 00:10:35,910
Ġewwa ta 'dan il-varjabbli
kwotazzjoni fil JavaScript

250
00:10:35,910 --> 00:10:39,020
hija ġabra ta 'pari b'valur ewlenin,
li waħda minnhom hija simbolu, li waħda minnhom

251
00:10:39,020 --> 00:10:39,690
huwa prezz.

252
00:10:39,690 --> 00:10:42,340
U nista 'nikseb fuq dawk il-valuri
bil-sintassi li ġej.

253
00:10:42,340 --> 00:10:46,280
Eżatt bħal fil-PHP, I jistgħu
jagħmel xi ħaġa like-- let

254
00:10:46,280 --> 00:10:48,590
me jagħmlu din il-kaxxa ftit akbar.

255
00:10:48,590 --> 00:10:52,750
Eżatt bħal fil-PHP, I jistgħu
jagħmlu this-- oh, dammit.

256
00:10:52,750 --> 00:10:53,250
Come fuq.

257
00:10:53,250 --> 00:10:56,350

258
00:10:56,350 --> 00:11:00,800
>> Eżatt bħal fil PHP-- OK, aħna ser
biss tuża n-noti preżentatur.

259
00:11:00,800 --> 00:11:06,010
Eżatt bħal fil-PHP, I jista
tagħmel $ kwotazzjoni $ quote ["simbolu"],

260
00:11:06,010 --> 00:11:08,860
u dan se tikseb me
il-valur ta '"simbolu."

261
00:11:08,860 --> 00:11:12,800
Fil JavaScript, li għaddej biex tkun
identiċi, fejn I tista 'biss tagħmel dan.

262
00:11:12,800 --> 00:11:14,850
L-unika ħaġa li l-
nieqsa hija s-sinjal dollaru.

263
00:11:14,850 --> 00:11:17,470
>> Allura nicely biżżejjed, allura, hemm
mhux kollha li ħafna sintassi ġdida.

264
00:11:17,470 --> 00:11:21,025
Allura dak li llum aħna niffukaw fuq, verament, huwa
xi wħud mill-ideat u l-applikazzjonijiet.

265
00:11:21,025 --> 00:11:22,900
U l-ewwel tali
applikazzjoni li inti tista

266
00:11:22,900 --> 00:11:26,090
raw jekk inti dived fis pset
seba diġà hija din sintassi.

267
00:11:26,090 --> 00:11:28,980
Għalhekk fl pset seba ', jekk inti stajt
jidher jew ma bbenefikawx encore,

268
00:11:28,980 --> 00:11:33,570
jafu li hemm fajl li nagħtu
inti imsejħa config.json-- JavaScript

269
00:11:33,570 --> 00:11:34,661
Joġġezzjonaw Notazzjoni.

270
00:11:34,661 --> 00:11:35,160
Għaliex?

271
00:11:35,160 --> 00:11:39,540
Ridna li jkunu jistgħu jagħtuk
mudell ma 'xi pari b'valur ċavetta.

272
00:11:39,540 --> 00:11:44,290
Ridna li jkunu jistgħu jagħtuk lista
tal-ospitanti, l-isem tas-server.

273
00:11:44,290 --> 00:11:46,710
Ridna li jagħtuk
placeholder għall username tiegħek

274
00:11:46,710 --> 00:11:48,210
u placeholder għall password tiegħek.

275
00:11:48,210 --> 00:11:49,410
Jekk int ma tara
dan għadu, biex ma tinkwetax.

276
00:11:49,410 --> 00:11:51,340
Aktar dwar dan fil pset seba
[? spec. ?] U mbagħad,

277
00:11:51,340 --> 00:11:53,173
ovvjament, irridu li inti
biex timla l-dos li

278
00:11:53,173 --> 00:11:55,310
għaliex meta inti log fis
CS50 IDE, kull wieħed minnkom

279
00:11:55,310 --> 00:11:57,630
jkollhom username tiegħek stess u password.

280
00:11:57,630 --> 00:12:00,910
>> Allura aħna jistgħu stajt użati nofs tuzzana
jew aktar formats differenti fajl.

281
00:12:00,910 --> 00:12:02,940
Jista 'jkollna użati fajl txt.

282
00:12:02,940 --> 00:12:04,570
Nistgħu użati fajl CSV.

283
00:12:04,570 --> 00:12:06,745
We jistgħu stajt użat
Fajl INI, fajl XML,

284
00:12:06,745 --> 00:12:09,370
mazz sħiħ aktar akronimi li
inti tista 'ma qatt semgħu.

285
00:12:09,370 --> 00:12:11,244
Huwa tip ta 'arbitrarja
fl-aħħar tal-ġurnata.

286
00:12:11,244 --> 00:12:16,030
Iżda super popolari dawn il-jiem huwa test
format imsejħa JSON-- JavaScript Għan

287
00:12:16,030 --> 00:12:18,460
Notation-- li tidher bħal dan.

288
00:12:18,460 --> 00:12:20,890
Huwa ftit cryptic,
iżda tinnota l-mudelli.

289
00:12:20,890 --> 00:12:24,180
Tibda ma 'kaboċċi miftuħa
Brace, u inti tispiċċa bl-istess.

290
00:12:24,180 --> 00:12:26,550
Ġewwa ta 'dan huwa xi ħaġa.

291
00:12:26,550 --> 00:12:27,920
Huwa par-valur ċavetta.

292
00:12:27,920 --> 00:12:30,580
Allura dan huwa oġġett li jien
tħares lejn fuq l-iskrin hawn

293
00:12:30,580 --> 00:12:33,690
li għandha ċavetta waħda, li għandu valur wieħed.

294
00:12:33,690 --> 00:12:37,610
U biss ddeduċiet bbażati fuq il-
mudell preċedenti, x'inhu l-prinċipali hawnhekk?

295
00:12:37,610 --> 00:12:39,790
Database, il-ħaġa li
ix-xellug tal-kolon.

296
00:12:39,790 --> 00:12:43,500
>> Issa, il-valur jiġri li jkun
linji multipli din id-darba.

297
00:12:43,500 --> 00:12:46,760
Iżda l-valur jibda bil-kaboċċi
Brace u tispiċċa bil Brace kaboċċi.

298
00:12:46,760 --> 00:12:49,480
Allura dak li tipproponi l-
tip tal-valur tal database?

299
00:12:49,480 --> 00:12:52,160

300
00:12:52,160 --> 00:12:54,670
A dizzjunarju jew, biss aktar
qosor, oġġett.

301
00:12:54,670 --> 00:12:55,170
Dritt?

302
00:12:55,170 --> 00:13:00,010
Dan huwa tip ta 'struttura data li
jistgħu jużaw strutturi oħra fi ħdanha stess.

303
00:13:00,010 --> 00:13:02,750
Mela jekk dan ħaġa sħiħa nkunu
sejħa ta 'object-- u oġġett

304
00:13:02,750 --> 00:13:07,101
huwa biss mazz ta 'valur importanti pairs-- l
valur tal database nnifisha hija oġġett.

305
00:13:07,101 --> 00:13:10,350
Il-valur ta database għandha mazz sħiħ
ta 'pari b'valur ewlenin, l-ewwel wieħed minnhom

306
00:13:10,350 --> 00:13:13,130
huwa ospitanti, allura isem, imbagħad
username, allura password,

307
00:13:13,130 --> 00:13:17,550
kull wieħed li l-valuri, sadanittant, huwa
biss string boring fil-kwotazzjonijiet doppja.

308
00:13:17,550 --> 00:13:19,770
>> Għalhekk anki jekk dan mhux
super ċara għadha biss,

309
00:13:19,770 --> 00:13:22,740
jafu li din hija biss
standard, b'mod pjuttost boring

310
00:13:22,740 --> 00:13:25,190
jaħżen data fil-format standard.

311
00:13:25,190 --> 00:13:27,700
Iżda l-iżbalji komuni inti
jista 'jagħmel, anki fil pset sebgħa,

312
00:13:27,700 --> 00:13:32,120
huma affarijiet stupid ftit, bħal jekk inti
aċċidentalment jħalli barra l-virgola hemmhekk.

313
00:13:32,120 --> 00:13:34,900
Li għaddej biex tirriżulta fil-fajl
ma tkun neċessarjament tinqara.

314
00:13:34,900 --> 00:13:38,191
Jekk inti aċċidentalment tħalli barra affarijiet bħall-
kwotazzjonijiet, mhuwiex ser tkun tinqara.

315
00:13:38,191 --> 00:13:41,654
Allura huwa format tal-fajl pretty nitpicky,
iżda huwa wieħed li super komuni.

316
00:13:41,654 --> 00:13:44,820
U aħna jiġri li jużawh, għalkemm
inti ma tuża kwalunkwe JavaScript mod ieħor,

317
00:13:44,820 --> 00:13:46,330
fil pset sebgħa.

318
00:13:46,330 --> 00:13:46,860
>> Kull dritt.

319
00:13:46,860 --> 00:13:48,110
Mela ftakar din l-istampa.

320
00:13:48,110 --> 00:13:51,657
Aħna tkellimna dwar, fil HTML, li
il-kodiċi tista 'tidher bħal dan.

321
00:13:51,657 --> 00:13:54,740
Dan huwa l-HyperText Markup Language
[Inaudible] għal ftit "hello, dinja."

322
00:13:54,740 --> 00:13:57,570
Iżda mbagħad aħna pproponiet
filwaqt lura li jekk dan jgħin,

323
00:13:57,570 --> 00:14:00,210
inti tista 'tixtieq li tibda taħseb
dwar dan diġà bħala siġra.

324
00:14:00,210 --> 00:14:03,730
Fil-fatt, il-indentazzjoni li aħna
użu biss għall-finijiet leġibbiltà tal

325
00:14:03,730 --> 00:14:05,610
jew għall-finijiet istil dwar
fuq ix-xellug tista tip ta

326
00:14:05,610 --> 00:14:10,040
tiġi tradotta fil din is-siġra, fejn inti
għandhom xi node għerq speċjali li aħna ser

327
00:14:10,040 --> 00:14:16,860
ġenerikament dokument bl-isem, li taħtu
huwa l-element HTML għerq jew tikketta, HTML,

328
00:14:16,860 --> 00:14:19,980
li mbagħad għandha żewġ
tfal, ras u l-korp.

329
00:14:19,980 --> 00:14:21,750
>> U mbagħad min-naħa, ras għandha titolu.

330
00:14:21,750 --> 00:14:23,440
U t-titolu għandu valur test.

331
00:14:23,440 --> 00:14:26,130
U l-korp simili għandu valur test.

332
00:14:26,130 --> 00:14:29,220
Mela jekk inti qed tgħid komdu
li iva, inti tista 'tieħu din HTML

333
00:14:29,220 --> 00:14:32,080
u tfassal stampa simili
dan, il-ġenb tal-lemin

334
00:14:32,080 --> 00:14:35,910
huwa mudell mentali sbieħ għaliex issa
li għandna JavaScript, l-ipprogrammar

335
00:14:35,910 --> 00:14:39,960
lingwa li browsers jista
jesegwixxu u jinterpretaw għalik,

336
00:14:39,960 --> 00:14:42,690
jirriżulta li dak li
aħna qed waslu biex jagħmlu fil-kodiċi

337
00:14:42,690 --> 00:14:45,320
huwa tibda jimmanipulaw dan
struttura ta 'siġra fil-memorja.

338
00:14:45,320 --> 00:14:47,070
Aħna ma jkollhom biex jibnu
l-siġra fil-memorja.

339
00:14:47,070 --> 00:14:49,880
Aħna ma jkollhom jagħmlu tip ta '
istruttura tad-data pset ħamsa u stil

340
00:14:49,880 --> 00:14:50,650
kumplessità.

341
00:14:50,650 --> 00:14:54,610
Il-browser, nicely biżżejjed, fuq
interpretazzjoni HTML fuq għal isfel,

342
00:14:54,610 --> 00:14:58,600
tax-xellug jew, hu litteralment se
idejn us-ekwivalenti ta 'pointer

343
00:14:58,600 --> 00:15:00,840
għal dak siġra kollu b'xejn.

344
00:15:00,840 --> 00:15:02,150
Hija ma kollha tax-xogħol iebes.

345
00:15:02,150 --> 00:15:05,520
Dak hu Mozilla u Apple
u oħrajn għamlu għalina.

346
00:15:05,520 --> 00:15:09,400
>> U ma JavaScript ser nieħdu
tkun kapaċi tikkontrolla u l-bidla u jagħmlu

347
00:15:09,400 --> 00:15:12,910
affarijiet interessanti għal
li siġra, magħrufa

348
00:15:12,910 --> 00:15:15,880
bħala DOM jew Object Model Dokument.

349
00:15:15,880 --> 00:15:17,110
Liema tip ta 'affarijiet?

350
00:15:17,110 --> 00:15:19,030
Ukoll, jirriżulta li
fl JavaScript, hemm

351
00:15:19,030 --> 00:15:22,800
din il-lista tal-londri ta
avvenimenti li jistgħu jseħħu.

352
00:15:22,800 --> 00:15:26,330
U aħna ma verament użata li
kelma peress ġimgħa żero u pset

353
00:15:26,330 --> 00:15:28,240
żero meta tkellimna dwar Scratch.

354
00:15:28,240 --> 00:15:31,390
Ħafna mill inti probabilment ma użax
avveniment fil-proġett Scratch tiegħek.

355
00:15:31,390 --> 00:15:33,850
Imma int tista recall
sempliċi Marco Polo

356
00:15:33,850 --> 00:15:36,760
eżempju, fejn kellna żewġ
sprites, wieħed minnhom qal, Marco.

357
00:15:36,760 --> 00:15:40,180
Il-oħra li minnhom imbagħad, wara smigħ
u s-smigħ il-każ, qal, Polo.

358
00:15:40,180 --> 00:15:42,080
Jekk le, tħossok liberu li
ħarsa lura li jmur lura.

359
00:15:42,080 --> 00:15:44,450
>> Iżda dan huwa biss biex
jgħidu, u inti tista 'tip ta'

360
00:15:44,450 --> 00:15:47,730
jiddeduċu mill-ismijiet ta 'dawn
affarijiet, JavaScript, jirriżulta,

361
00:15:47,730 --> 00:15:53,200
se tagħtina mod biex tisma
għall maws jinżel 'l isfel jew maws jitla

362
00:15:53,200 --> 00:15:57,920
jew ċavetta jinżel 'l isfel jew ċavetta
jitla 'jew onselect onsubmit

363
00:15:57,920 --> 00:15:59,740
jew onresizing xi ħaġa.

364
00:15:59,740 --> 00:16:03,060
Fi kliem ieħor, kwalunkwe azzjoni fiżika
li bniedem jista 'jieħu bi browser

365
00:16:03,060 --> 00:16:08,210
li inti tagħmel kull jum, inti tista 'tikteb
kodiċi għal dak jisma għal dawk l-avvenimenti

366
00:16:08,210 --> 00:16:10,220
u mbagħad ma xi ħaġa xierqa.

367
00:16:10,220 --> 00:16:14,130
>> Per eżempju, jekk inti tuża Google Maps,
x'jiġri jekk inti ikklikkja u jimxu

368
00:16:14,130 --> 00:16:16,250
l-maws, tipikament?

369
00:16:16,250 --> 00:16:17,758
Jekk tikklikkja u drag?

370
00:16:17,758 --> 00:16:18,258
Yeah?

371
00:16:18,258 --> 00:16:21,701

372
00:16:21,701 --> 00:16:22,200
Eżattament.

373
00:16:22,200 --> 00:16:23,159
Il-mappa jibda jiċċaqlaq.

374
00:16:23,159 --> 00:16:25,616
Allura inti tista 'tip ta' tara x'hemm
minn hawn, x'hemm hemmhekk.

375
00:16:25,616 --> 00:16:27,130
U kif ma Google jimplimentaw dik?

376
00:16:27,130 --> 00:16:29,421
Ukoll, preżumibbilment, dawn qed
użu ta 'koppja ta' dawn avveniment

377
00:16:29,421 --> 00:16:31,720
semmiegħa, wieħed li
jgħid, jisimgħu għal fuq ġrieden

378
00:16:31,720 --> 00:16:35,410
down-- hekk meta l-utent fiżikament
pushes trackpad tiegħu jew tagħha jew maws tagħha

379
00:16:35,410 --> 00:16:36,010
isfel.

380
00:16:36,010 --> 00:16:38,350
U allura aħna qed tfittex
xi ħaġa bħal moviment

381
00:16:38,350 --> 00:16:41,145
jew xi avveniment ieħor li
jippermetti li qbid drag.

382
00:16:41,145 --> 00:16:45,910
U fil-fatt, drag hija simili f'dan
dot dot dot lista ta 'għażliet possibbli.

383
00:16:45,910 --> 00:16:49,140
>> Allura dan se jkun b'saħħtu
mod biex tibda jirrispondu għall-utent

384
00:16:49,140 --> 00:16:52,824
anki qabel ma hu jew hi attwalment klikks
xi ħaġa espliċita bħal jissottomettu.

385
00:16:52,824 --> 00:16:55,240
Iżda aħna qed tmur biex jintroduċu
a suġġetti koppja biex naslu s'hemm.

386
00:16:55,240 --> 00:16:58,570
Iżda l-ewwel, ejja tranżizzjoni
għal xi kodiċi attwali.

387
00:16:58,570 --> 00:17:01,450
Hekk jien se jmorru
quddiem u jiftħu dom 0,

388
00:17:01,450 --> 00:17:05,869
li huwa eżempju sempliċi ħafna
hawnhekk li jekk I zoom in sempliċement

389
00:17:05,869 --> 00:17:08,500
għandha dan input hawn għalija.

390
00:17:08,500 --> 00:17:12,410
U jien ser jimxi 'l quddiem u tip
"David" għall-isem tiegħi u kklikkja Submit.

391
00:17:12,410 --> 00:17:17,940
>> U mbagħad, għalkemm tip ta 'irħis, I
jkollhom din pront li pops up li tgħid,

392
00:17:17,940 --> 00:17:19,244
"hello, David!"

393
00:17:19,244 --> 00:17:21,740
Allura dan huwa tip ta '
bħal tagħna "hello, dinja"

394
00:17:21,740 --> 00:17:25,150
li għamilna awhile lura fis-C u
anki fil-PHP għaliex stajt dinamiku

395
00:17:25,150 --> 00:17:26,310
outputted isem tiegħi.

396
00:17:26,310 --> 00:17:28,230
I tista 'tagħmel isem xi ħadd ieħor hawn.

397
00:17:28,230 --> 00:17:31,240
I tista 'sempliċement tbiddel dan li,
simili, Hannah, ikklikkja Submit.

398
00:17:31,240 --> 00:17:33,780
U fil-fatt, il-pop-up ftit bidliet.

399
00:17:33,780 --> 00:17:36,650
>> Issa, pop-ups huma wieħed mill-
aktar karatteristiċi abbużati tal-web.

400
00:17:36,650 --> 00:17:38,520
U fil-fatt, lura fl
l-pop up imblokkaturi kuljum

401
00:17:38,520 --> 00:17:40,820
daħal fis-Vogue għaliex inti
imur għal xi website--

402
00:17:40,820 --> 00:17:43,604
forsi place-- dubjuż
li imbagħad f'daqqa waħda

403
00:17:43,604 --> 00:17:46,020
tibda peppering iskrin tiegħek
bil-mazz sħiħ ta 'pop-ups.

404
00:17:46,020 --> 00:17:49,700
U għalhekk din il-ħila biex pop up
twieqi quddiem il-utent

405
00:17:49,700 --> 00:17:52,372
ma kienx partikolarment
tajjeb riċevuti mill-umanità.

406
00:17:52,372 --> 00:17:54,080
Allura hu għalhekk li inti tara
dan jipprevjeni ħaġa,

407
00:17:54,080 --> 00:17:55,706
li biss jagħmel dan ħaġa sħiħa ikrah.

408
00:17:55,706 --> 00:17:57,996
Allura aħna qed tmur għall-ħtieġa ta '
aħjar mod biex fil-pront lill-utent.

409
00:17:57,996 --> 00:17:59,350
Iżda għal issa, li jidher li qed jaħdem.

410
00:17:59,350 --> 00:18:03,320
Hekk biss intuwittivament, dak
jidher li jiġri hawn?

411
00:18:03,320 --> 00:18:07,870
I jimxi 'l quddiem u kklikkja Issottometti, u
imbagħad xi ħaġa li qed jiġri, b'mod ċar.

412
00:18:07,870 --> 00:18:12,870
Imma dak li mhux qed iseħħ dan ma jiġri
aħħar ġimgħa kwalunkwe ħin I għafast Submit?

413
00:18:12,870 --> 00:18:15,940
What ma seħħx fuq l-iskrin?

414
00:18:15,940 --> 00:18:17,170
Jiddispjacini?

415
00:18:17,170 --> 00:18:18,010
Rikarigu.

416
00:18:18,010 --> 00:18:19,720
Il URL ma bidlet xejn.

417
00:18:19,720 --> 00:18:22,250
I qal li dan kien dom 0,
u jien xorta fil-dom 0.

418
00:18:22,250 --> 00:18:26,890
Normalment, aħna'd jiksbu mibdula għal xi oħra
URL, bħall register.php jew simili.

419
00:18:26,890 --> 00:18:29,560
>> Iżda anke meta I tiċħad
din il-ħaġa billi tikklikkja OK,

420
00:18:29,560 --> 00:18:32,310
avviż li l-URL
soġġorni kompletament tpoġġi.

421
00:18:32,310 --> 00:18:35,350
U, fil-fatt, jekk jien ftit
skeptical, let me tiftaħ Chrome.

422
00:18:35,350 --> 00:18:36,860
Let me tiftaħ il-tab Network.

423
00:18:36,860 --> 00:18:38,360
U avviż huwa vojt fil-mument.

424
00:18:38,360 --> 00:18:40,700
Let me imorru quddiem u terġa 'tissottometti Maria.

425
00:18:40,700 --> 00:18:42,810
M'hemm l-ebda traffiku tan-network tkun xi tkun.

426
00:18:42,810 --> 00:18:44,320
Hekk hemm ebda HTTP.

427
00:18:44,320 --> 00:18:47,620
>> Allura fil-fatt, jekk I tħares lejn il-kodiċi tas-sors
għall this-- let me qrib dan il-tieqa

428
00:18:47,620 --> 00:18:49,480
u mur View Sors.

429
00:18:49,480 --> 00:18:50,400
Interessanti.

430
00:18:50,400 --> 00:18:53,520
Jidher qisu hemm xi
tikketti ġodda, fosthom iskrittura.

431
00:18:53,520 --> 00:18:57,490
Mela ejja tagħti ħarsa ġewwa CS50
IDE eżattament dak I bagħtet lill-utent.

432
00:18:57,490 --> 00:19:00,690
>> So here is-- ejja
tiffoka fuq il-HTML biss.

433
00:19:00,690 --> 00:19:03,500
Hawn il-nofs ta 'isfel ta' dom-0.html.

434
00:19:03,500 --> 00:19:07,830
U tinnota li huwa ltqajna titolu,
tikketta ras, tikketta korp, forma tag.

435
00:19:07,830 --> 00:19:11,257
Imma dak li jumps out lilek bħala
differenti, speċjalment jekk inti stajt qatt

436
00:19:11,257 --> 00:19:12,590
miktub kull JavaScript yourself.

437
00:19:12,590 --> 00:19:14,920
Let me iscroll ftit
għad-dritt hawn.

438
00:19:14,920 --> 00:19:18,330
Stajt ltqajna input,
input ieħor għall jissottometti.

439
00:19:18,330 --> 00:19:21,410
Stajt ltqajna identità, li huwa tip ta 'ġodda.

440
00:19:21,410 --> 00:19:22,790
Iżda aħna ma tara dan ma CSS.

441
00:19:22,790 --> 00:19:24,480
X'iktar huwa definittivament ġdid?

442
00:19:24,480 --> 00:19:24,980
Yeah?

443
00:19:24,980 --> 00:19:30,580

444
00:19:30,580 --> 00:19:32,140
Nizza.

445
00:19:32,140 --> 00:19:32,760
>> Kull dritt.

446
00:19:32,760 --> 00:19:35,630
Għalhekk, fejn jgħid onsubmit,
Avviż dak li jidher li jsegwu.

447
00:19:35,630 --> 00:19:38,740
Dan huwa attribut
fin-nomenklatura HTML.

448
00:19:38,740 --> 00:19:40,944
Il-valur tiegħu huwa din is-sekwenza ikkwotat hawn.

449
00:19:40,944 --> 00:19:42,860
U dan jistenna ftit
stramb ewwel daqqa t'għajn.

450
00:19:42,860 --> 00:19:44,050
Mhuwiex HTML.

451
00:19:44,050 --> 00:19:45,240
Mhuwiex CSS.

452
00:19:45,240 --> 00:19:47,580
Dan huwa, kif inti tista raden, JavaScript.

453
00:19:47,580 --> 00:19:51,850
Għalhekk jidher li mibnija fis dan
paġna web hija funzjoni msejħa greet.

454
00:19:51,850 --> 00:19:54,250
U jien jiddeduċi li ftit
għaliex dan huwa ftit kliem, insellem.

455
00:19:54,250 --> 00:19:55,880
Huwa ltqajna paren miftuħa,
paren qrib, u virgola.

456
00:19:55,880 --> 00:19:58,095
Id-Dehra funzjoni C,
qisu funzjoni PHP.

457
00:19:58,095 --> 00:20:00,370
>> U fil-fatt, li għaddej biex
tkun funzjoni JavaScript.

458
00:20:00,370 --> 00:20:01,440
Imbagħad jien jirritornaw falza.

459
00:20:01,440 --> 00:20:03,440
Aħna ser terga 'lura għal
li fi ftit mument.

460
00:20:03,440 --> 00:20:05,320
Iżda fejn dan huwa funzjoni definita?

461
00:20:05,320 --> 00:20:07,950
Well let me iscroll
għall-quċċata tal-fajl.

462
00:20:07,950 --> 00:20:11,710
U anki jekk din hija linja twila,
huwa relattivament sempliċi.

463
00:20:11,710 --> 00:20:15,000
Let me zoom out hawn u
tiffoka fuq dawn l-erba 'linji.

464
00:20:15,000 --> 00:20:17,137
>> Għalhekk fl JavaScript, biss
bħal PHP, inti biss

465
00:20:17,137 --> 00:20:19,720
jiġifieri, litteralment, il-kelma "funzjoni,"
l-isem tal-funzjoni,

466
00:20:19,720 --> 00:20:22,700
u mbagħad parentesi ma 'kwalunkwe
arguments-- ebda argument f'dan il-każ.

467
00:20:22,700 --> 00:20:25,290
U hemm ebda tip ta 'ritorn
fl JavaScript, bħad PHP.

468
00:20:25,290 --> 00:20:29,470
Allura huwa ftit iktar laxk minn C.
Brace kaboċċi miftuħa, Brace kaboċċi qrib.

469
00:20:29,470 --> 00:20:33,270
Mibnija fis JavaScript huwa function--
mhux function-- rakkomandat

470
00:20:33,270 --> 00:20:35,730
imma funzjoni msejħa 'twissija
uniku għan tagħhom fil-ħajja

471
00:20:35,730 --> 00:20:38,620
huwa li pull up li pretty ikrah
pront li rajna mument ilu.

472
00:20:38,620 --> 00:20:40,950
>> Issa dan huwa tip ta f'gidma.

473
00:20:40,950 --> 00:20:42,560
X'qed jiġri hawn?

474
00:20:42,560 --> 00:20:45,840
Mela ejja nibdew biex
jenfasizzaw kollox hawn.

475
00:20:45,840 --> 00:20:48,540
Dik hija l-istess argument biex twissi.

476
00:20:48,540 --> 00:20:49,530
U x'inhu għaddej?

477
00:20:49,530 --> 00:20:51,200
Dan biss qisu string.

478
00:20:51,200 --> 00:20:59,180
U jirriżulta li, kuntrarjament għall PHP u b'differenza
C, ma jimpurtax fil JavaScript

479
00:20:59,180 --> 00:21:01,090
jekk inti kwotazzjonijiet uniku jew kwotazzjonijiet doppja.

480
00:21:01,090 --> 00:21:02,060
Dawn ser ikunu ekwivalenti.

481
00:21:02,060 --> 00:21:03,769
U franchement, huwa biss
popolari dawn il-jiem

482
00:21:03,769 --> 00:21:06,726
għall-programmaturi JavaScript biex dejjem
użu kwotazzjonijiet uniku għal xi raġuni.

483
00:21:06,726 --> 00:21:07,840
Huwa biss il-ħaġa li tagħmel.

484
00:21:07,840 --> 00:21:09,710
Iżda aħna jistgħu jużaw kwotazzjonijiet doppja, kif ukoll.

485
00:21:09,710 --> 00:21:11,540
>> Allura plus huwa karattru ġdid.

486
00:21:11,540 --> 00:21:14,512
Iżda dawk minnkom li ghamilt
dan qabel, dak ma plus jfisser?

487
00:21:14,512 --> 00:21:16,440
Yeah.

488
00:21:16,440 --> 00:21:17,120
Concatenate.

489
00:21:17,120 --> 00:21:18,570
Allura rajna dan fil-PHP.

490
00:21:18,570 --> 00:21:20,315
Hemm biss l-dot
operatur PHP li

491
00:21:20,315 --> 00:21:22,000
se concatenate żewġ kordi flimkien.

492
00:21:22,000 --> 00:21:24,000
C kien uġigħ fl-għonq li jagħmlu dan.

493
00:21:24,000 --> 00:21:27,310
Recall minn pset sitt, li kien
uġigħ especial fl-għonq,

494
00:21:27,310 --> 00:21:29,470
inti għandek tuża
xi ħaġa bħal strcat

495
00:21:29,470 --> 00:21:31,660
wara allokazzjoni memorja
fuq il-munzell jew l borġ.

496
00:21:31,660 --> 00:21:34,243
Kellek biex tiżdied permezz ta 'ċrieki
biss biex concatenate żewġ kordi.

497
00:21:34,243 --> 00:21:36,040
Fil JavaScript, huwa super sempliċi.

498
00:21:36,040 --> 00:21:38,030
Biss tuża l-operatur plus bejniethom.

499
00:21:38,030 --> 00:21:41,420
>> Allura l--kumpless tħares
ħaġa jidher li din

500
00:21:41,420 --> 00:21:43,490
għax fl-aħħar ta '
din is-sekwenza sħiħa, I biss

501
00:21:43,490 --> 00:21:45,797
concatenate fuq punt exclamation.

502
00:21:45,797 --> 00:21:48,380
Mela jekk dak li kien popping up kien
"hello, David," "hello, Hannah,"

503
00:21:48,380 --> 00:21:52,740
"hello, Maria," u oħrajn, b'mod ċar
li ħaġa tan-nofs bejn iż-żewġ

504
00:21:52,740 --> 00:21:55,215
pluses għandha tagħti me aċċess għal liema?

505
00:21:55,215 --> 00:21:58,855

506
00:21:58,855 --> 00:22:01,991
X'hemm fil hemm għall-żgur?

507
00:22:01,991 --> 00:22:02,490
Yeah.

508
00:22:02,490 --> 00:22:05,090
So I ser feint hawn il
twieġeb isem tagħhom, id-dritt?

509
00:22:05,090 --> 00:22:10,380
Allura isem tagħhom feġġ fil-finali
riżultat. Allura dak li jfisser dan?

510
00:22:10,380 --> 00:22:15,080
Well, I proposti aktar kmieni f'dik
stampa li l-hekk imsejħa DOM

511
00:22:15,080 --> 00:22:18,580
għandha dan l-element għerq speċjali
mod up dokument top imsejħa.

512
00:22:18,580 --> 00:22:21,660
U issa, jirriżulta, li għaddej
li jkun fattur varjabbli globali speċjali

513
00:22:21,660 --> 00:22:25,250
fl JavaScript, mibnija fis li hija
mazz sħiħ ta 'funzjonalità utli.

514
00:22:25,250 --> 00:22:31,770
Fost il-funzjonalità utli hija l-
kapaċità li tinkiseb fi kwalunkwe node dixxendent.

515
00:22:31,770 --> 00:22:37,760
Dawk kwadri jew rettangoli jew elissi
huma biss lymph fil-siġra, biex ngħidu hekk.

516
00:22:37,760 --> 00:22:41,850
>> Għalhekk jirriżulta li mibnija fis
Dokument oġġett JavaScript tal

517
00:22:41,850 --> 00:22:47,300
hija funzjoni, magħrufa bħala
metodu, li sejjaħ getElementById.

518
00:22:47,300 --> 00:22:50,410
Is-sintassi għas-sejħa
funzjoni fl JavaScript

519
00:22:50,410 --> 00:22:55,220
li hu ġewwa ta 'oġġett jew ta'
varjabbli hija biss ma 'l-dot notazzjoni.

520
00:22:55,220 --> 00:22:57,950
U rajna dan fil C
dak l-sintassi Istituzzjonjijiet.

521
00:22:57,950 --> 00:23:03,530
You see dan pset seba ', it-tip ta',
tip ta ', meta tara CS50 :: query.

522
00:23:03,530 --> 00:23:08,070
Il-kolon kolon fil-PHP hija ieħor
ta 'żjarat funzjoni li l-

523
00:23:08,070 --> 00:23:09,260
ġewwa ta 'xi oġġett.

524
00:23:09,260 --> 00:23:11,960
>> Iżda għal issa fl JavaScript,
huwa biss dot.

525
00:23:11,960 --> 00:23:14,170
U għalhekk din il-funzjoni,
nicely biżżejjed, tip ta '

526
00:23:14,170 --> 00:23:16,810
jgħid dak li does-- tikseb element mill ID.

527
00:23:16,810 --> 00:23:20,280
Element huwa biss isem ieħor
għal tag jew node fil-DOM.

528
00:23:20,280 --> 00:23:26,900
U hekk jiksbu element bl ID "name"
ifisser this-- hawnhekk HTML tiegħi.

529
00:23:26,900 --> 00:23:31,910
U bbażati fuq dan HTML, dak
node jew dak HTML tag am I

530
00:23:31,910 --> 00:23:35,097
ser programmatically tkun mogħtija
billi ċċempel document.getElementById?

531
00:23:35,097 --> 00:23:37,650

532
00:23:37,650 --> 00:23:38,500
>> Yeah, eżattament.

533
00:23:38,500 --> 00:23:42,670
Jien ser tikseb l-input
element hemm li ID huwa "isem."

534
00:23:42,670 --> 00:23:45,140
Allura speċifikament, inti tista
think ta 'din il-funzjoni,

535
00:23:45,140 --> 00:23:49,560
getElementById, bħala mod kif tingħata
lura pointer għal dak node speċifiku

536
00:23:49,560 --> 00:23:50,060
fil-siġra.

537
00:23:50,060 --> 00:23:51,980
Aħna ma tfasslux dan
siġra, iżda huwa mod

538
00:23:51,980 --> 00:23:54,900
ta 'jkollna aċċess għal dik
rettangolu jew dak ir-rettangolu

539
00:23:54,900 --> 00:23:58,090
billi jidentifika b'mod uniku dan permezz ID tagħha.

540
00:23:58,090 --> 00:23:59,760
>> Issa, għaliex dan ikun utli?

541
00:23:59,760 --> 00:24:01,510
Ukoll, jirriżulta
li ladarba inti ħadthom gotten

542
00:24:01,510 --> 00:24:07,220
li node, dak ir-rettangolu mill-
stampa, li node ġewwa ta 'dan,

543
00:24:07,220 --> 00:24:10,660
imbagħad, għandha mazz sħiħ ta '
pari b'valur ewlenin properties--

544
00:24:10,660 --> 00:24:13,480
jew data, li wieħed minnhom huwa msejjaħ il-valur.

545
00:24:13,480 --> 00:24:16,500
Allura litteralment, huwa tip ta '
f'gidma biex jispjegaw il-ħaġa sħiħa.

546
00:24:16,500 --> 00:24:19,370
Iżda fl-aħħar tal-ġurnata,
dan kollu ma huwa jtik

547
00:24:19,370 --> 00:24:23,070
string li l-utent ittajpjat fil
b'dan il-mod ġerarkiku.

548
00:24:23,070 --> 00:24:24,820
Imma jien ma simili
ftit dawn l-affarijiet.

549
00:24:24,820 --> 00:24:27,590
Jew pjuttost, hemm xi kurżità għadu.

550
00:24:27,590 --> 00:24:28,870
Kollha ta 'li dehret li jaħdmu.

551
00:24:28,870 --> 00:24:33,420
Għaliex taħseb I lura
falza wara sejħa insellem?

552
00:24:33,420 --> 00:24:35,910
Dan jidher ftit ikrah, li
Għandi żewġ dikjarazzjonijiet hemmhekk

553
00:24:35,910 --> 00:24:38,730
separati minn semicolons.

554
00:24:38,730 --> 00:24:39,310
Ħu raden.

555
00:24:39,310 --> 00:24:44,390
Jekk I jitneħħew ritorn foloz, dak li
jista 'jiġri, biss istintivament?

556
00:24:44,390 --> 00:24:46,990

557
00:24:46,990 --> 00:24:49,460
Jiddispjacini, jiġifieri mill-ġdid?

558
00:24:49,460 --> 00:24:50,530
>> Iftaħ mazz ta 'Windows.

559
00:24:50,530 --> 00:24:52,780
Allura potenzjalment forsi xi ħaġa
bħal dik jiġri.

560
00:24:52,780 --> 00:24:54,422
X 'iktar?

561
00:24:54,422 --> 00:24:55,630
Jista 'jippreżenta talba fejn?

562
00:24:55,630 --> 00:24:59,109

563
00:24:59,109 --> 00:25:00,510
L-istess paġna.

564
00:25:00,510 --> 00:25:03,110
Allura, fil-fatt, li li
l-eqreb twieġeb hawn,

565
00:25:03,110 --> 00:25:05,890
anki jekk, kuntrarjament
fil-passat, stajt ma

566
00:25:05,890 --> 00:25:09,300
speċifikat l-attribut azzjoni,
li normalment għandna nagħmlu.

567
00:25:09,300 --> 00:25:11,780
Jinstabx hemm default.
Jekk inti ma jispeċifikawx azzjoni,

568
00:25:11,780 --> 00:25:15,370
huwa simili qal quote, unquote
jew l-isem tal-fajl innifsu,

569
00:25:15,370 --> 00:25:17,850
li f'dan il-każ
jkun simili dom-0.html.

570
00:25:17,850 --> 00:25:20,420
Huwa biss tip ta 'dedott,
jew pjuttost impliċita.

571
00:25:20,420 --> 00:25:22,420
>> U hekk jekk jien ma tagħmel dan, ejja avviż.

572
00:25:22,420 --> 00:25:23,230
Let me jiffranka dan.

573
00:25:23,230 --> 00:25:25,270
U stajt jitneħħew ritorn foloz.

574
00:25:25,270 --> 00:25:27,759
Let me jmorru lura għal din
Eżempju u forza rikarigu dan.

575
00:25:27,759 --> 00:25:30,800
U inti tista raw lili jissuġġerixxu
dan fuq CS50 Iddiskuti mazz ta 'drabi.

576
00:25:30,800 --> 00:25:34,560
Jekk xejn qatt jaġixxi funky u l
browser mhuwiex iġib ruħu kif inti tistenna,

577
00:25:34,560 --> 00:25:37,410
oftentimes inti ser tixtieq li żżomm
Shift u mbagħad ikklikkja Reload.

578
00:25:37,410 --> 00:25:41,480
Li se seħħ kull fajl biex jerġgħu jitgħabbew
u ma jużawx cache lokali browser tiegħek

579
00:25:41,480 --> 00:25:47,032
jew kopja sabiex issa, let me imorru quddiem u
jiftħu Ispettur tiegħi, il-tab Network.

580
00:25:47,032 --> 00:25:48,740
Jien ser ikklikkja
Ippreserva Log minħabba I

581
00:25:48,740 --> 00:25:51,660
ma tridx li tħassar il-fillieri
ladarba I nikseb whisked bogħod x'imkien ieħor.

582
00:25:51,660 --> 00:25:54,650
>> Let me imorru quddiem hawn u
tip Andi, ikklikkja Submit.

583
00:25:54,650 --> 00:25:55,150
Kull dritt.

584
00:25:55,150 --> 00:25:56,480
Li jidher kif mistenni.

585
00:25:56,480 --> 00:25:57,440
Hija tgħid "hello, Andi."

586
00:25:57,440 --> 00:25:59,420
Let me ikklikkja OK.

587
00:25:59,420 --> 00:26:00,610
Interessanti.

588
00:26:00,610 --> 00:26:05,100
Avviż li l-paġna tinbidel,
għalkemm il-paġna oriġinali.

589
00:26:05,100 --> 00:26:06,770
Avviż it-tip URL tal mibdula.

590
00:26:06,770 --> 00:26:09,430
Hija żiedet kwistjoni mark,
li normalment indikatur

591
00:26:09,430 --> 00:26:11,260
li aħna ppruvaw biex jissottomettu xi ħaġa.

592
00:26:11,260 --> 00:26:13,570
U mbagħad fil-qiegħ,
saħansitra aktar espliċitu,

593
00:26:13,570 --> 00:26:17,570
hawnhekk huwa t-talba attwali HTTP,
li ltqajna rispons ta '200 li

594
00:26:17,570 --> 00:26:18,490
ġab lili lura hawn.

595
00:26:18,490 --> 00:26:20,250
>> Għalhekk dan mhux dak
rridu nagħmlu, right?

596
00:26:20,250 --> 00:26:22,166
Minħabba I ma jridux
rikarigu-paġna kollha.

597
00:26:22,166 --> 00:26:24,970
I minflok riedu li jirritornaw
falza sabiex short circuit

598
00:26:24,970 --> 00:26:28,840
imġieba default tal-browser, li
kienet, naturalment, li jissottometti il-paġna.

599
00:26:28,840 --> 00:26:31,700
>> Mela ejja tagħti ħarsa lejn
eżempju marġinalment aħjar.

600
00:26:31,700 --> 00:26:33,920
Din hija dom verżjoni waħda.

601
00:26:33,920 --> 00:26:36,680
U avviż li ġej.

602
00:26:36,680 --> 00:26:39,150
Huwa OK jekk inti ma grok
kollha tal-linji ta 'kodiċi.

603
00:26:39,150 --> 00:26:41,750
Imma dak li hu fundamentalment differenti
dwar din l-implimentazzjoni?

604
00:26:41,750 --> 00:26:44,690
I ser jistipula iġib ruħu l-
istess, ma l-istess ħaġa.

605
00:26:44,690 --> 00:26:49,320

606
00:26:49,320 --> 00:26:51,570
Liema kienu I ovvjament isir b'mod differenti?

607
00:26:51,570 --> 00:26:52,266
Yeah?

608
00:26:52,266 --> 00:26:53,182
>> UDJENZA: [inaudible].

609
00:26:53,182 --> 00:27:03,421

610
00:27:03,421 --> 00:27:04,170
DAVID Malan: Yeah.

611
00:27:04,170 --> 00:27:08,620
Allura l-funzjoni hi definita differently--
fi kliem ieħor, assenti mill-forma,

612
00:27:08,620 --> 00:27:13,180
up hemm fuq il-linja 7-- jew
pjuttost, linja 8-- m'għadhomx

613
00:27:13,180 --> 00:27:15,070
għandi l-attribut onsubmit.

614
00:27:15,070 --> 00:27:16,750
Fl-eżempju ta 'qabel, I kellha din.

615
00:27:16,750 --> 00:27:18,530
U mbagħad I litteralment kiteb kodiċi tiegħi hawn.

616
00:27:18,530 --> 00:27:20,210
U mbagħad I qal jirritornaw falza.

617
00:27:20,210 --> 00:27:22,180
U jekk ma togħrok
inti l-mod żbaljat għadhom,

618
00:27:22,180 --> 00:27:26,140
din għandha tibda sakemm
kif, bħal fil HTML,

619
00:27:26,140 --> 00:27:29,530
meta bdejna għall-ko-mingle it
ma CSS fl-attributi stil,

620
00:27:29,530 --> 00:27:32,890
hija biss bdiet tikseb ftit
messy jew tħoss ħażina ftit.

621
00:27:32,890 --> 00:27:35,020
>> Bl-istess mod hawnhekk, jekk
tibda tieħu HTML,

622
00:27:35,020 --> 00:27:37,419
u allura inti awtomatikament
plop xi kodiċi JavaScript

623
00:27:37,419 --> 00:27:40,460
fin-nofs ta string ikkwotat, huwa
mhux ser ikun maintainable ħafna.

624
00:27:40,460 --> 00:27:40,630
Dritt?

625
00:27:40,630 --> 00:27:43,690
Huwa lanqas ovvju fl-ewwel
post fejn il-kodiċi JavaScript huwa.

626
00:27:43,690 --> 00:27:46,590
Hekk ikun tassew sbieħ kif
prinċipju ta 'disinn aħjar,

627
00:27:46,590 --> 00:27:50,500
ejja jżommu HTML tagħna kompletament
separati minn JavaScript tagħna.

628
00:27:50,500 --> 00:27:53,150
>> Allura biex tagħmel dan, dak li aħna ħadthom
isir hawnhekk huwa l-following--

629
00:27:53,150 --> 00:27:56,790
aħna sempliċiment jużaw HTML għall markup biss.

630
00:27:56,790 --> 00:28:00,730
U hekk fil-verżjoni wieħed ta 'dan, kollha
Għandi hija forma b'ID speċjali.

631
00:28:00,730 --> 00:28:04,630
U mbagħad stabbiliti hawn, jien jieħdu vantaġġ
ta 'karatteristika speċjali tal JavaScript

632
00:28:04,630 --> 00:28:08,480
li biha I jista 'jkollhom x'hemm
imsejħa funzjoni anonima.

633
00:28:08,480 --> 00:28:14,150
Għalhekk jirriżulta li jekk I call
document.getElementById ta 'demo "

634
00:28:14,150 --> 00:28:18,890
dan huwa simili tagħti me a pointer li
dan node fil-siġra tiegħi, l-element forma,

635
00:28:18,890 --> 00:28:20,100
biex ngħidu hekk.

636
00:28:20,100 --> 00:28:22,220
>> Issa, I biss jafu minn
jafu daqsxejn ta HTML

637
00:28:22,220 --> 00:28:26,330
issa qed ikollna taqra wħud online
referenza, li element forma jappoġġja

638
00:28:26,330 --> 00:28:29,950
mazz sħiħ ta 'avveniment listeners-- fil
kliem ieħor, il-lista tal-londri ta 'avveniment

639
00:28:29,950 --> 00:28:31,700
semmiegħa li rajna mument ilu.

640
00:28:31,700 --> 00:28:35,950
Naf mill-qari dokumentazzjoni
li onsubmit huwa avveniment valida

641
00:28:35,950 --> 00:28:38,520
semmiegħ għal element formola.

642
00:28:38,520 --> 00:28:41,480
>> Hekk darba Naf li,
huwa sikur għalija li tagħmel

643
00:28:41,480 --> 00:28:45,390
l following-- tikseb dik node
mill-siġra, l-element forma,

644
00:28:45,390 --> 00:28:48,070
u l-aċċess tagħha hekk imsejħa
proprjetà onsubmit.

645
00:28:48,070 --> 00:28:49,880
Allura l-dot ifisser biss
dan huwa proprjetà,

646
00:28:49,880 --> 00:28:52,180
bħal meta valur speċjali ġewwa ta 'dan.

647
00:28:52,180 --> 00:28:55,590
U liema tip data am I
tassenja, apparentement,

648
00:28:55,590 --> 00:28:58,900
li onsubmit, li hija
effettivament varjabbli ġewwa

649
00:28:58,900 --> 00:29:01,010
ta 'dik node fil-siġra?

650
00:29:01,010 --> 00:29:04,100
Huwa qasam ġewwa ta 'dak Struct.

651
00:29:04,100 --> 00:29:05,810
X'hemm-tip ta 'dejta?

652
00:29:05,810 --> 00:29:07,030
>> Funzjoni, yeah.

653
00:29:07,030 --> 00:29:08,607
Għalhekk jirriżulta li PHP għandha dan.

654
00:29:08,607 --> 00:29:10,440
U anki jekk aħna
ma jgħidlek dwar dan,

655
00:29:10,440 --> 00:29:16,240
C għandha wkoll funzjoni pointers, il
ħila li jgħaddu u tassenja funzjonijiet

656
00:29:16,240 --> 00:29:18,330
bħala valuri varjabbli "infushom.

657
00:29:18,330 --> 00:29:20,280
U aħna mhux qed tmur
li rigressjoni lura għall C.

658
00:29:20,280 --> 00:29:23,250
Iżda għal issa, jirriżulta li
fuq in-naħa tal-lemin hawn,

659
00:29:23,250 --> 00:29:26,260
anki jekk jistenna ftit
funky, dan ifisser, ħej browser,

660
00:29:26,260 --> 00:29:27,550
tagħti me funzjoni.

661
00:29:27,550 --> 00:29:30,560
Jien ma jmur biex lanqas biss jitħajru tagħti
dan l-isem għaliex jien litteralment

662
00:29:30,560 --> 00:29:34,450
ser tassenja ejja sejħa hija
l-indirizz tal din il-funzjoni

663
00:29:34,450 --> 00:29:35,994
immedjatament lill onsubmit.

664
00:29:35,994 --> 00:29:39,160
Fi kliem ieħor, browser, inti m'għandekx bżonn
li tkun taf dak li sejjaħ din il-funzjoni.

665
00:29:39,160 --> 00:29:41,890
Inti biss jeħtieġ li tkun taf
fejn hu għall-memorja.

666
00:29:41,890 --> 00:29:44,210
U għalhekk huwa biżżejjed biss biex
jkollhom sinjal ugwali hemmhekk

667
00:29:44,210 --> 00:29:48,240
u li ma jolqot ismijiet dan, bħal
foo jew insellem jew kwalunkwe kelma oħra.

668
00:29:48,240 --> 00:29:50,150
U issa din hija biss ħaġa stilistika.

669
00:29:50,150 --> 00:29:53,100
I tista 'timxi dan Brace kaboċċi
fuq the-- linja sorry-- jmiss

670
00:29:53,100 --> 00:29:54,750
bħal aħna normalment jagħmlu CS50.

671
00:29:54,750 --> 00:29:57,550
Iżda fl JavaScript, huwa
fil-fatt stylistically komuni

672
00:29:57,550 --> 00:30:00,450
li biss iżommu l-Brace kaboċċi, il-
ewwel waħda, fuq dik ewwel linja.

673
00:30:00,450 --> 00:30:02,620
>> Iżda hawn, hemm
xejn interessanti.

674
00:30:02,620 --> 00:30:05,830
Li Brace kaboċċi miftuħa biss
tiddemarka l-bidu tal-funzjoni tiegħi.

675
00:30:05,830 --> 00:30:09,320
Il-funzjoni issa huwa
identiċi, ħlief stajt

676
00:30:09,320 --> 00:30:11,452
inklużi l falz ritorn
ġewwa ta 'din il-funzjoni.

677
00:30:11,452 --> 00:30:13,160
Minħabba jirriżulta out--
u inti biss

678
00:30:13,160 --> 00:30:14,980
jafu dan minn qari
l documentation--

679
00:30:14,980 --> 00:30:19,740
li jekk il-funzjoni li inti tassenja
l-handler onsubmit prospetti falza,

680
00:30:19,740 --> 00:30:23,420
il-browser biss jaf u jaqbel
li ma tippreżenta l-formola ma 'server.

681
00:30:23,420 --> 00:30:27,210
Jekk dan jirritorna veru, se tippreżenta
li server għal raġunijiet Ser naraw

682
00:30:27,210 --> 00:30:28,700
huma utli fil-ftit mument.

683
00:30:28,700 --> 00:30:31,000
>> U allura l-virgola wara
l Brace kaboċċi hemm biss

684
00:30:31,000 --> 00:30:32,541
ifisser jien jsir tiddefinixxi l-funzjoni.

685
00:30:32,541 --> 00:30:36,600
Inti taf dak li sejħa mill-aktar
kif inti tisma 'sottomissjoni.

686
00:30:36,600 --> 00:30:37,100
Kull dritt.

687
00:30:37,100 --> 00:30:40,650
Dan għadu probabbilment tip ta 'ikrah.

688
00:30:40,650 --> 00:30:42,190
Allura dak li aktar jista nagħmlu?

689
00:30:42,190 --> 00:30:45,000
>> Ukoll, jirriżulta imbagħad fil
verżjoni tnejn, li hija l-last--

690
00:30:45,000 --> 00:30:46,780
U aħna ser biss t'għajn fil dan.

691
00:30:46,780 --> 00:30:49,850
Bir-riskju ta 'teħid
dan uglier, jirriżulta

692
00:30:49,850 --> 00:30:52,160
li hemm librerija fil
id-dinja msejħa jQuery.

693
00:30:52,160 --> 00:30:54,900
U jQuery hija super
popolari JavaScript librerija

694
00:30:54,900 --> 00:30:57,930
dan huwa tant popolari li ħafna
kwalunkwe JavaScript-- mhuwiex

695
00:30:57,930 --> 00:31:00,540
komuni għall-persuni li jħawdu
jQuery ma JavaScript.

696
00:31:00,540 --> 00:31:01,070
Għaliex?

697
00:31:01,070 --> 00:31:04,990
JavaScript nnifisha għandha ħafna
modi verbose ta 'kif isir things--

698
00:31:04,990 --> 00:31:07,820
document.getElementById, dadadadadada.

699
00:31:07,820 --> 00:31:10,510
Inti jispiċċaw wara ħafna
konzijiet tal-kodiċi.

700
00:31:10,510 --> 00:31:15,550
>> Allura sħabi jismu John resid,
li attwalment xogħlijiet għal istartjar

701
00:31:15,550 --> 00:31:18,630
up dawn il-ġranet, ħareġ
ma 'dan librerija snin

702
00:31:18,630 --> 00:31:22,070
ilu li ħafna nies kkontribwew
li sejjaħ jQuery li l-bidliet

703
00:31:22,070 --> 00:31:23,449
l-sintassi fil-mod li ġej.

704
00:31:23,449 --> 00:31:25,740
U biss sabiex inti stajt tidher dan,
għaliex inti ser dejjem

705
00:31:25,740 --> 00:31:28,140
tara dan jekk tagħmel
fuq l-internet proġett finali,

706
00:31:28,140 --> 00:31:33,270
dan ikun il-mod ekwivalenti ta '
implimentazzjoni ta 'dak istess funzjoni użu

707
00:31:33,270 --> 00:31:34,630
din il-librerija speċjali.

708
00:31:34,630 --> 00:31:36,680
>> Issa, aktar milli tease
jiddistingwuh kollha kemm hi,

709
00:31:36,680 --> 00:31:38,520
ejja biss ħarsa lejn xi mudelli.

710
00:31:38,520 --> 00:31:44,850
Dan sintassi jidher li
kemm funzjonijiet anonimi

711
00:31:44,850 --> 00:31:49,584
jew funzjonijiet nameless
jew funzjonijiet lambda AKA?

712
00:31:49,584 --> 00:31:50,190
Tnejn, id-dritt?

713
00:31:50,190 --> 00:31:52,690
U inti taf li, anki jekk
int mhux super comfy ma 'dan,

714
00:31:52,690 --> 00:31:55,780
biss mill-fatt li
jgħid funzjoni () darbtejn.

715
00:31:55,780 --> 00:31:58,172
>> U jirriżulta li
dak li dan il-kodiċi huwa doing--

716
00:31:58,172 --> 00:32:01,255
u aħna ser jirreferu għal referenzi onlajn,
finalment, għal xi għajnuna ma 'dan.

717
00:32:01,255 --> 00:32:04,480
Dan ifisser biss li meta
id-dokument huwa lest,

718
00:32:04,480 --> 00:32:07,490
jimxi 'l quddiem u jirreġistraw
il-formula sussegwenti

719
00:32:07,490 --> 00:32:12,064
bħala l-handler jissottometti għall-HTML
element li idea uniku huwa demo.

720
00:32:12,064 --> 00:32:14,480
U mbagħad, meta dan iseħħ,
sejħa dawn iż-żewġ linji ta 'kodiċi.

721
00:32:14,480 --> 00:32:18,677
U dan huwa, traġikament, aktar
Mod verbose ta 'tgħid ritorn foloz.

722
00:32:18,677 --> 00:32:21,510
U aħna imsemmi dan biss minħabba
tkun taf tara kodiċi bħal dan online.

723
00:32:21,510 --> 00:32:23,140
U huwa xejn li jkun skoraġġuti mid.

724
00:32:23,140 --> 00:32:26,057
Iżda, wieħed iżomm f'moħħu li x'hemm
se tkun komuni fl JavaScript

725
00:32:26,057 --> 00:32:26,765
huwa dan paradigma.

726
00:32:26,765 --> 00:32:29,510
U hekk hu għalhekk nuru dan għal issa.

727
00:32:29,510 --> 00:32:30,010
Kull dritt.

728
00:32:30,010 --> 00:32:32,730
Allura mingħajr ma insistiet ukoll
ħafna fuq dak sintassi,

729
00:32:32,730 --> 00:32:37,800
huma hemm xi mistoqsijiet dwar
dawn l-eżempji jew ideat s'issa?

730
00:32:37,800 --> 00:32:38,300
Kull dritt.

731
00:32:38,300 --> 00:32:40,220
Mela ejja jużaw dan għal xi ħaġa utli.

732
00:32:40,220 --> 00:32:47,070
Nagħmlu paġna web li biss jgħid hello,
hekk u hekk mhux kollha li interessanti,

733
00:32:47,070 --> 00:32:47,830
ma underwhelm.

734
00:32:47,830 --> 00:32:51,038
Dan wieħed mhux ser ikunu sbieħ,
iżda huwa ser jagħmel xi ħaġa utli.

735
00:32:51,038 --> 00:32:56,350
Let me jmorru lura għall-direttorju tiegħi
hawn u jiftħu, jiġifieri, forma-0.html.

736
00:32:56,350 --> 00:32:59,320
>> Allura jissoponi dan huwa l-freshman
paġna reġistrazzjoni sports intramurali

737
00:32:59,320 --> 00:33:01,780
mingħajr ebda CSS jew xi sens ta 'disinn.

738
00:33:01,780 --> 00:33:05,404
U nixtieq li jimxi 'l quddiem u
hawn jirreġistraw bil-password.

739
00:33:05,404 --> 00:33:08,320
U jien ser taqbel mat-termini
u l-kundizzjonijiet u kklikkja Reġistru.

740
00:33:08,320 --> 00:33:11,700
U issa l-website jgħid, "Inti
irreġistrata! (Well, mhux verament.) "

741
00:33:11,700 --> 00:33:15,070
Li tidher qisha maħduma, iżda
let me imorru quddiem u forza rikarigu.

742
00:33:15,070 --> 00:33:18,720
>> U ħalluni ngħid, no, inti ma
bżonn indirizz email tiegħi attwali.

743
00:33:18,720 --> 00:33:21,820
Jew forsi aħna ser biss jgħidu mail fil hemmhekk.

744
00:33:21,820 --> 00:33:25,080
Password se jkun, bħal, 12345.

745
00:33:25,080 --> 00:33:28,810
U mbagħad, biss għaliex jien
idjota, issa huwa 123456789.

746
00:33:28,810 --> 00:33:31,150
U jien mhux ser jiċċekkja kaxxa tiegħek.

747
00:33:31,150 --> 00:33:31,850
>> Hmm.

748
00:33:31,850 --> 00:33:32,350
Kull dritt.

749
00:33:32,350 --> 00:33:34,920
Hekk hemm diversi opportunitajiet
sforz akbar.

750
00:33:34,920 --> 00:33:39,070
U inti taf, jew se tara fil pset
seba ', li tista' tikteb code--

751
00:33:39,070 --> 00:33:41,890
u inti ser ikollok biex jikteb
kodiċi PHP-- biex jiddefendi

752
00:33:41,890 --> 00:33:45,780
kontra dawn it-tipi ta 'utent
Żbalji minħabba li l-utent b'mod ċar

753
00:33:45,780 --> 00:33:46,790
ma kkoperax.

754
00:33:46,790 --> 00:33:49,680
U hu jew hi ma jkunx tak l-
valuri int riedu jew anke fil-format

755
00:33:49,680 --> 00:33:50,630
li int riedu minnhom.

756
00:33:50,630 --> 00:33:53,250
Sabiex tkun taf tara fil pset seba li
nistgħu żgur li jkollha xi

757
00:33:53,250 --> 00:33:55,680
jekk il-kondizzjonijiet li jgħidu
jekk l-indirizz email

758
00:33:55,680 --> 00:33:59,450
mhix username@something.edu,
nistgħu biss

759
00:33:59,450 --> 00:34:02,575
jgħidu sorry u ruhna lill-utent
ħafna, bħal inti tista 'tkun fl pset sebgħa.

760
00:34:02,575 --> 00:34:05,700
Jew jekk ma ċċekkjati il-kaxxa,
jirriżulta fil-PHP, inti tista 'tikxef li,

761
00:34:05,700 --> 00:34:06,200
wisq.

762
00:34:06,200 --> 00:34:09,389
U ċertament jekk il-passwords
ma jaqblux bħal fil register.php

763
00:34:09,389 --> 00:34:11,521
għall pset seba, inti tista 'tikxef dak.

764
00:34:11,521 --> 00:34:13,770
Iżda li l-uġigħ fil-
għonq f'dak issa jitolbu

765
00:34:13,770 --> 00:34:15,510
us biex tmur-triq kollha lejn l-server.

766
00:34:15,510 --> 00:34:17,053
L-utent ikun infurmat ta 'l-iżball.

767
00:34:17,053 --> 00:34:19,219
U mill-inqas ħlief jekk tuża
xi teknika fancier,

768
00:34:19,219 --> 00:34:20,929
issa huma għandhom ikklikkja l-vleġġa lura.

769
00:34:20,929 --> 00:34:23,300
Mhux se jkun sbieħ, bħal
ħafna ta 'websajts llum,

770
00:34:23,300 --> 00:34:26,190
jekk kellek aktar immedjata
feedback, istantanjament?

771
00:34:26,190 --> 00:34:31,389
>> Fi kliem ieħor, let me mur verżjoni
wieħed, li se jkun hemm ebda prettier.

772
00:34:31,389 --> 00:34:33,469
Iżda ma jkollu din il-karatteristika.

773
00:34:33,469 --> 00:34:39,590
Malan, 12345, 123,456,789, mhux
ser jivverifika l-kaxxa, Reġistru.

774
00:34:39,590 --> 00:34:41,330
Passwords ma jaqblux.

775
00:34:41,330 --> 00:34:44,459
Għalhekk anki jekk dan pop-up huwa ugly--
nistgħu tissostitwixxi dan eventwalment

776
00:34:44,459 --> 00:34:47,000
ma 'xi ħaġa bħal bootstrap,
li tkun taf tara fil pset seba

777
00:34:47,000 --> 00:34:50,239
huwa library-- popolari ħafna I ma
jiskopru li l-passwords ma jaqblux.

778
00:34:50,239 --> 00:34:50,739
Kull dritt.

779
00:34:50,739 --> 00:34:52,530
Well, let me jiffissaw li kif l-utent.

780
00:34:52,530 --> 00:34:55,460
Let me imorru quddiem u jgħidu 12345, 12345.

781
00:34:55,460 --> 00:34:57,780
Għadu mhux iċċekkjar tal-ftehim.

782
00:34:57,780 --> 00:35:00,210
Int trid jaqblu li l-
termini u kundizzjonijiet.

783
00:35:00,210 --> 00:35:01,760
Allura għaliex?

784
00:35:01,760 --> 00:35:04,100
>> Jekk konna diġà ippreżenta
li hemm mod,

785
00:35:04,100 --> 00:35:07,260
u konna mitluba int fl
pset seba biex tiskopri żball

786
00:35:07,260 --> 00:35:09,780
kondizzjonijiet bħal dan
server-side, għaliex għandi

787
00:35:09,780 --> 00:35:13,940
jolqot ukoll tagħmel dan fil JavaScript?

788
00:35:13,940 --> 00:35:15,850
X'hemm argument
favur żżid dak

789
00:35:15,850 --> 00:35:18,760
int ser tara kif some--
hemm kumplessità addizzjonali.

790
00:35:18,760 --> 00:35:23,610

791
00:35:23,610 --> 00:35:25,930
>> Forsi m'hemmx rasu.

792
00:35:25,930 --> 00:35:26,924
Liema jista 'jkun?

793
00:35:26,924 --> 00:35:27,840
UDJENZA: [inaudible].

794
00:35:27,840 --> 00:35:31,132

795
00:35:31,132 --> 00:35:32,340
DAVID Malan: Oh, interessanti.

796
00:35:32,340 --> 00:35:33,530
Jisfrutta potenzjali.

797
00:35:33,530 --> 00:35:37,540
Hekk żgur, jekk int ma tqandil
jintuza mill-utent żbaljata li kbir,

798
00:35:37,540 --> 00:35:40,170
forsi dan kollu l-aħjar jekk
lanqas ma jilħqu server tiegħek.

799
00:35:40,170 --> 00:35:42,160
Nixtieq timbotta lura hemmhekk u
jiġifieri, inti għandek probabbilment

800
00:35:42,160 --> 00:35:43,284
jiffissaw kemm dawk il-problemi.

801
00:35:43,284 --> 00:35:44,140
Imma dak li ġusta.

802
00:35:44,140 --> 00:35:44,710
X 'iktar?

803
00:35:44,710 --> 00:35:45,626
>> UDJENZA: [inaudible].

804
00:35:45,626 --> 00:35:47,970

805
00:35:47,970 --> 00:35:49,014
>> DAVID Malan: Yeah.

806
00:35:49,014 --> 00:35:51,680
Dan il-kodiċi, kif għidna qabel, huwa
interpretat fuq il-naħa tal-klijent.

807
00:35:51,680 --> 00:35:53,846
Ma jolqot is-server,
li jfisser li ma

808
00:35:53,846 --> 00:35:55,930
impatt tagħbija jew il-kapaċità tal-server.

809
00:35:55,930 --> 00:35:59,840
U issa, għall ftit għalija qodma,
dan m'għandux effett sinifikanti

810
00:35:59,840 --> 00:36:01,970
għaliex għandi utent wieħed dritt issa.

811
00:36:01,970 --> 00:36:04,010
>> Imma jekk int xi
website daqs deċenti,

812
00:36:04,010 --> 00:36:07,400
speċjalment l-akbar, bħal Facebook,
l-aktar inti tista 'żżomm nies off

813
00:36:07,400 --> 00:36:09,927
ta 'server tiegħek l-aħjar
għaliex server, naturalment,

814
00:36:09,927 --> 00:36:12,510
biss għandha ammont finit ta 'RAM,
numru finit ta 'gigahertz,

815
00:36:12,510 --> 00:36:16,340
numru finit ta 'affarijiet
hija tista 'tagħmel kull unità ta' ħin.

816
00:36:16,340 --> 00:36:19,170
Mela jekk ikun hemm aktar nies fl
id-dinja laqtu server tiegħek,

817
00:36:19,170 --> 00:36:21,750
aċċidentalment qtugħ
b'mod żbaljat, biss kif ukoll jekk inti

818
00:36:21,750 --> 00:36:23,254
tista 'żżomm li tagħbija off server tiegħek.

819
00:36:23,254 --> 00:36:25,420
Plus, speċjalment fuq mobbli
device-- jekk inti stajt qatt

820
00:36:25,420 --> 00:36:29,190
log fis my.harvard jew
Netid Yale jew bħalhom,

821
00:36:29,190 --> 00:36:32,330
hemm dan l-latency ma 'lott ta'
websajts bħal dik li biha li tieħu,

822
00:36:32,330 --> 00:36:34,110
bħal, kkritikat tieni jew tnejn kultant.

823
00:36:34,110 --> 00:36:37,979
U mbagħad, Alla tiegħi, jekk inti mistype,
imbagħad inti għandek hit lura u jerġa 'jagħmel dan.

824
00:36:37,979 --> 00:36:40,520
Allura hemm latency, speċjalment
fuq konnessjonijiet tan-netwerk bil-mod.

825
00:36:40,520 --> 00:36:43,030
Iżda JavaScript, minħabba
din tmur fuq il-klijent

826
00:36:43,030 --> 00:36:46,720
u ma teħtieġx li jmorru quddiem u lura
madwar internet potenzjalment kajman

827
00:36:46,720 --> 00:36:49,780
konnessjoni, inti tista 'tikseb
feedback kważi istantanja.

828
00:36:49,780 --> 00:36:50,760
>> Mela ejja nħarsu lejn din.

829
00:36:50,760 --> 00:36:54,280
Let me jiftħu-forma 0 u
tħares lejn il-HTML hawn.

830
00:36:54,280 --> 00:36:56,040
U ejja biss tara x'inhu għaddej.

831
00:36:56,040 --> 00:36:59,460
Din hija forma li
azzjoni hija register.php.

832
00:36:59,460 --> 00:37:01,530
Jien biss jużaw tikseb so
li I tista 'tara l-URL.

833
00:37:01,530 --> 00:37:05,030
Iżda għal passwords, aħna'd żgur tixtieq
li jbiddlu dan li post fir-realtà.

834
00:37:05,030 --> 00:37:06,910
Hawn qasam input tat-test tip.

835
00:37:06,910 --> 00:37:09,050
Hawn input ieħor
qasam tat password tip.

836
00:37:09,050 --> 00:37:13,150
Hawnhekk huwa, jekk inti stajt qatt rat,
input ta 'Checkbox tip.

837
00:37:13,150 --> 00:37:15,250
>> Iżda hemm ebda JavaScript
hawn tkun xi tkun.

838
00:37:15,250 --> 00:37:18,170
Dan huwa biss HTML li
tmur għall register.php.

839
00:37:18,170 --> 00:37:21,020
Iżda fil-verżjoni waħda, fejn I
bdiet tikseb dawk pop-ups,

840
00:37:21,020 --> 00:37:23,010
ejja ara dak li attwalment jiġri hawn.

841
00:37:23,010 --> 00:37:26,757
Fil-verżjoni wieħed, dak
Jien ser see-- I

842
00:37:26,757 --> 00:37:29,340
ħasbu I tista stall biżżejjed
bil-kliem biżżejjed, imma I dam barra.

843
00:37:29,340 --> 00:37:35,180

844
00:37:35,180 --> 00:37:38,590
>> Fil-verżjoni one-- hemm immorru.

845
00:37:38,590 --> 00:37:43,180
Fil-verżjoni wieħed, avviż-following--
u mhuwiex l-aħjar implimentazzjoni,

846
00:37:43,180 --> 00:37:44,420
imma hija l-ewwel tiegħi.

847
00:37:44,420 --> 00:37:47,680
Avviż li taħt il-
forma, għandi tag iskrittura.

848
00:37:47,680 --> 00:37:49,430
U tag iskrittura ifisser,
ħej, browser, hawn

849
00:37:49,430 --> 00:37:52,340
taqa xi kodiċi fil-
tipikament, JavaScript.

850
00:37:52,340 --> 00:37:54,420
U issa, avviż dak li qed nagħmel.

851
00:37:54,420 --> 00:37:59,070
Fuq line-- nista bilkemm
aqra it-- linja 32, li jgħid,

852
00:37:59,070 --> 00:38:01,420
var form-- hekk tagħti me
varjabbli imsejħa formola.

853
00:38:01,420 --> 00:38:05,049
U mbagħad jiksbu document.getElementId
ta '"reġistrazzjoni."

854
00:38:05,049 --> 00:38:05,590
X'inhi din?

855
00:38:05,590 --> 00:38:07,290
Well, let me kontrina up here.

856
00:38:07,290 --> 00:38:11,510
U avviż, ah, I taw l-element formola
idea arbitrarja iżda deskrittiv

857
00:38:11,510 --> 00:38:13,050
ta 'reġistrazzjoni.

858
00:38:13,050 --> 00:38:16,820
Allura dan jagħti me a varjabbli li
tippermetti me li grab dak node,

859
00:38:16,820 --> 00:38:19,580
li rettangolu fil-siġra imsejħa formola.

860
00:38:19,580 --> 00:38:24,460
mezzi form.onsubmit, ħej browser,
tirreġistra avveniment semmiegħ

861
00:38:24,460 --> 00:38:25,470
fuq din il-formola.

862
00:38:25,470 --> 00:38:28,890
Fi kliem ieħor, meta din il-forma hija
sottomessa, jesegwixxi-kodiċi li ġej.

863
00:38:28,890 --> 00:38:30,810
Dan ma jeħtieġx isem għaliex
għaliex għandek bżonn tkun taf l-isem?

864
00:38:30,810 --> 00:38:32,880
Inti biss jeħtieġ li tkun taf
dak li tesegwixxi, għalhekk jimmiraw

865
00:38:32,880 --> 00:38:35,610
huwa ta 'funzjoni anonimu jew lambda.

866
00:38:35,610 --> 00:38:37,632
U dik il-funzjoni hija
kollha ta 'dawn il-linji hawn.

867
00:38:37,632 --> 00:38:40,840
U issa, li tkun onest, anki jekk inti
jista 'ma qatt bil-miktub JavaScript

868
00:38:40,840 --> 00:38:44,200
qabel, huwa biss C u PHP loġika.

869
00:38:44,200 --> 00:38:51,720
Mela jekk form.email.value == "" -
hekk jekk l-qasam email huwa vojt,

870
00:38:51,720 --> 00:38:54,980
Yell fil-utent ma "Int trid
jipprovdu l-indirizz email tiegħek. "

871
00:38:54,980 --> 00:38:58,980
Else jekk form.password.value
huwa Yell vojt fil-utent,

872
00:38:58,980 --> 00:39:00,400
"Int trid tipprovdi password tiegħek."

873
00:39:00,400 --> 00:39:04,240
>> Aktar interessanti loġikament,
jekk form.password.value ma

874
00:39:04,240 --> 00:39:08,630
form.confirmation.value-- ugwali
fejn ma konferma jiġu minn?

875
00:39:08,630 --> 00:39:09,470
Let me kontrina.

876
00:39:09,470 --> 00:39:12,870
Well, I sejjaħ dan input
qasam hawn password.

877
00:39:12,870 --> 00:39:15,180
U jien sejjaħ dan wieħed hawn konferma.

878
00:39:15,180 --> 00:39:17,850
I jistgħu qalu li din
password tnejn jew xi ħaġa oħra.

879
00:39:17,850 --> 00:39:20,560
Jien biss loġikament verifika
li dawn tnejn huma l-istess.

880
00:39:20,560 --> 00:39:25,760
Else-- jirriżulta dan huwa s-Sur Boole
again-- valur Boolean, il-kaxxa verifika.

881
00:39:25,760 --> 00:39:29,810
Mela jekk jien ngħid, exclamation point--
jekk le form.agreement.checked,

882
00:39:29,810 --> 00:39:31,820
Yell fil-utent kif ukoll.

883
00:39:31,820 --> 00:39:34,470
>> Allura dan sintassi tkun taf tara huwa
komuni ħafna fl JavaScript,

884
00:39:34,470 --> 00:39:35,970
fejn inti għandek dan notazzjoni bit-tikek.

885
00:39:35,970 --> 00:39:37,460
Tibda ma 'xi oġġett hawn.

886
00:39:37,460 --> 00:39:41,430
Inti adsa fil-fond għal li
proprjetà bħal password.

887
00:39:41,430 --> 00:39:43,280
U allura inti tikseb mill-valur attwali tiegħu.

888
00:39:43,280 --> 00:39:45,830
U għal darb'oħra, hawnhekk huwa l-input.

889
00:39:45,830 --> 00:39:47,310
Hawn hu l-password isem.

890
00:39:47,310 --> 00:39:50,860
U l-valur tagħha huwa x'ikun l-
bniedem fil-fatt ittajpjat fil.

891
00:39:50,860 --> 00:39:53,610
>> Allura fil kollha ta 'dawn
każijiet, I lura falza.

892
00:39:53,610 --> 00:39:55,800
Iżda jekk le, I-ritorn veru.

893
00:39:55,800 --> 00:39:58,030
U hekk issa naraw
użu konvinċenti ta 'meta

894
00:39:58,030 --> 00:40:00,620
inti tirritorna falza li
twaqqaf dak l-utent tal tagħmel

895
00:40:00,620 --> 00:40:03,200
u jagħmel lilu jew lilha jagħżlu
għal darb'oħra jew tip ġdid.

896
00:40:03,200 --> 00:40:05,870
Inkella, nerġgħu lura veru.

897
00:40:05,870 --> 00:40:08,585
>> U let me jintroduċu wieħed
varjant l-ieħor ta 'dan biss

898
00:40:08,585 --> 00:40:13,140
għal żerriegħa xi ftehim tiegħu.

899
00:40:13,140 --> 00:40:16,850
Ukoll, fil-verżjoni 2 ta 'dan, il-forma-2--
I ser tagħmel dan b'mewġa ta 'idejn.

900
00:40:16,850 --> 00:40:19,920
Dan huwa, għal dawk kurjuż,
il-verżjoni jQuery,

901
00:40:19,920 --> 00:40:23,330
dawk minnkom li tista 'tixtieq li
dabble f'dak librerija partikolari.

902
00:40:23,330 --> 00:40:25,145
Imma ejja start-- u xi mistoqsijiet?

903
00:40:25,145 --> 00:40:29,230
Let me nieqaf għal mument minħabba
li kien mgħaġġel u ħafna.

904
00:40:29,230 --> 00:40:32,610
>> Imma l-ħaġa sbieħ hawnhekk hija li kollha
tal-kodiċi hija pjuttost l-istess.

905
00:40:32,610 --> 00:40:33,985
L-għalf ġdid huwa dak li huwa l-dom?

906
00:40:33,985 --> 00:40:35,115
Liema huma dawn rettangoli?

907
00:40:35,115 --> 00:40:35,990
Liema huma dawn in-nodi?

908
00:40:35,990 --> 00:40:37,540
X'hemm funzjoni anonimu?

909
00:40:37,540 --> 00:40:38,830
X'hemm avveniment handler?

910
00:40:38,830 --> 00:40:43,480
Iżda Thankfully, ħafna ta 'dan huwa biss
ċirku sħiħ minn, ngħidu aħna, żero ġimgħa.

911
00:40:43,480 --> 00:40:43,980
Kull dritt.

912
00:40:43,980 --> 00:40:46,070
Allura xi ħaġa ftit aktar interessanti?

913
00:40:46,070 --> 00:40:49,340
Ukoll, qabel kollox, let me go
quddiem u jiftħu Google Maps.

914
00:40:49,340 --> 00:40:53,360
U tkun taf avviż li għal
mument, fuq it-tieni qasma,

915
00:40:53,360 --> 00:40:55,930
Avviż x'jiġri meta
I ikklikkja mgħaġġel biżżejjed.

916
00:40:55,930 --> 00:40:59,720
U f'dan il-kuntest fil-Harvard huwa tant
mgħaġġel li inti ma verament jindunax bih.

917
00:40:59,720 --> 00:41:04,469
Imma dak do you tip ta 'tip ta' tara
jekk I ikklikkja u drag verament mgħaġġel?

918
00:41:04,469 --> 00:41:07,010
Dawk minnkom ħars online,
jekk inti bil-mod dan l-veloċità 0.5x,

919
00:41:07,010 --> 00:41:09,640
inti tista 'tara dan aħjar.

920
00:41:09,640 --> 00:41:13,550
>> X'kien qed jiġri biss
qabel I għafast u mkaxkra?

921
00:41:13,550 --> 00:41:15,900
Let me jippruvaw here-- let me do
xi ħaġa oħra, bħal 90,210.

922
00:41:15,900 --> 00:41:17,550
Ejja ħa mmorru 'l bogħod.

923
00:41:17,550 --> 00:41:19,000
Dan kien verament mgħaġġel, wisq.

924
00:41:19,000 --> 00:41:22,460
Kif dwar Disney World?

925
00:41:22,460 --> 00:41:23,190
Hemm immorru.

926
00:41:23,190 --> 00:41:23,690
KOLLOX SEW.

927
00:41:23,690 --> 00:41:26,030
What did you tara għat-tieni qasma?

928
00:41:26,030 --> 00:41:27,200
Eżatt, bħal, kwadri, right?

929
00:41:27,200 --> 00:41:28,930
Placeholders għall-madum?

930
00:41:28,930 --> 00:41:30,270
>> Ukoll, x'inhu għaddej hawn?

931
00:41:30,270 --> 00:41:35,410
Google Maps huwa eżempju sabiħ ta '
din it-teknoloġija li sejjaħ Ajax.

932
00:41:35,410 --> 00:41:38,510
U dan huwa fejn aħna ser tibda
jużaw l-JavaScript fil-partikolarment

933
00:41:38,510 --> 00:41:39,277
mod alluring.

934
00:41:39,277 --> 00:41:41,610
Lura fil-ġurnata, kien hemm
din il-websajt imsejħa MapQuest.

935
00:41:41,610 --> 00:41:44,120
U jien messha ħadet
screenshot ta 'dan mill-1990,

936
00:41:44,120 --> 00:41:45,820
fejn jekk int riedu
ħarsa up here fuq il-mappa,

937
00:41:45,820 --> 00:41:48,590
inti litteralment ikklikkja vleġġa
up fil-quċċata li wera inti

938
00:41:48,590 --> 00:41:49,870
kwadru differenti tal-mappa.

939
00:41:49,870 --> 00:41:51,790
Jekk int riedu jiċċaqalqu xellug, inti
għafast vleġġa li wera inti

940
00:41:51,790 --> 00:41:53,210
kwadru differenti tal-mappa.

941
00:41:53,210 --> 00:41:54,840
U xi websites xorta tagħmel dan illum.

942
00:41:54,840 --> 00:41:57,820
Iżda anke MapQuest gotten
aħjar, bħal Google Maps.

943
00:41:57,820 --> 00:42:01,880
>> Minflok, x'hemm aħjar dawn
jiem huwa websajts li jużaw Ajax.

944
00:42:01,880 --> 00:42:04,510
AJAX-- inkella magħruf bħala
Asynchronous JavaScript u XML,

945
00:42:04,510 --> 00:42:08,370
li huwa biss mod fancy ta 'tgħid
teknoloġija jew teknika li

946
00:42:08,370 --> 00:42:14,200
jippermetti browser tuża JavaScript
li jagħmlu talbiet HTTP addizzjonali

947
00:42:14,200 --> 00:42:16,390
wara l-paġna ġiet mgħobbija.

948
00:42:16,390 --> 00:42:17,479
Allura dak li jfisser dan?

949
00:42:17,479 --> 00:42:19,270
Ukoll, ikun xorta
tal annoying fil Gmail

950
00:42:19,270 --> 00:42:21,103
jekk kull darba li inti riedu
biex jiċċekkjaw mail tiegħek,

951
00:42:21,103 --> 00:42:24,940
kellek litteralment hit Control-R jew
Kmand-R jew ikklikkja l-buttuna Reload

952
00:42:24,940 --> 00:42:26,580
u l-paġna darn kollu se jerġgħu jitgħabbew.

953
00:42:26,580 --> 00:42:26,800
Dritt?

954
00:42:26,800 --> 00:42:28,460
Ikun flash abjad
probabbilment għat-tieni.

955
00:42:28,460 --> 00:42:30,043
Inti tara l-bar-progress stupid.

956
00:42:30,043 --> 00:42:33,170
U biss biex tara jekk għandek ġdid
mail, il-paġna web kollu u l-URL

957
00:42:33,170 --> 00:42:34,580
li qed jkollok biex jerġgħu jitgħabbew.

958
00:42:34,580 --> 00:42:35,960
>> Iżda li mhux dak li jiġri fil Gmail.

959
00:42:35,960 --> 00:42:36,459
Dritt?

960
00:42:36,459 --> 00:42:40,300
Meta ikollok email ġdid fil
Gmail, dak li jiġri fuq l-iskrin?

961
00:42:40,300 --> 00:42:41,480
Hija biss turi up, right?

962
00:42:41,480 --> 00:42:44,280
Hija biss magically jidher
bħala ringiela ġdida fit-tabella.

963
00:42:44,280 --> 00:42:47,030
Li attwalment jinvolvi
ammont deċenti ta 'kumplessità.

964
00:42:47,030 --> 00:42:51,892
Fil-fatt, jekk inti taħseb dwar din is-siġra,
li anki jekk hija waħda sempliċi hawn,

965
00:42:51,892 --> 00:42:54,100
Gmail-- u I d jkollhom biex tfittex
lejn il-kodiċi li sure--

966
00:42:54,100 --> 00:42:58,710
probabbilment ikollu tabella HTML jew forsi
lista unordered li jirrendi

967
00:42:58,710 --> 00:43:01,060
kull wieħed mill inboxes emails tiegħek bħala.

968
00:43:01,060 --> 00:43:04,050
>> U hekk jekk inti timmaġina dan hemm
hija siġra fil-memorja meta int

969
00:43:04,050 --> 00:43:09,050
użu Gmail li jistenna tip ta 'tip ta'
bħal dan, meta Google jirrealizza, ooh,

970
00:43:09,050 --> 00:43:12,770
ikollok email ġdid, ma
jridu jinbnew l-siġra kollu.

971
00:43:12,770 --> 00:43:16,430
Pjuttost, trid issib l-node fil
l-siġra li tirrappreżenta inbox tiegħek

972
00:43:16,430 --> 00:43:18,580
u biss daħħal node ġdid.

973
00:43:18,580 --> 00:43:24,640
>> Allura simili ħafna għall pset ħames, fejn inti
kellhom daħħal lymph fis-tabella hash,

974
00:43:24,640 --> 00:43:28,410
bl-istess mod ma Google, permezz
JavaScript kodiċi li kitbet,

975
00:43:28,410 --> 00:43:31,890
travers din is-siġra, figura fejn
huwa dik il-parti inbox tat-tieqa,

976
00:43:31,890 --> 00:43:33,440
u mbagħad daħħal ringiela ġdida.

977
00:43:33,440 --> 00:43:37,460
U ringiela ġdida ifisser biss wieħed
jew aktar lymph ġodda fil-siġra.

978
00:43:37,460 --> 00:43:41,340
>> U għalhekk Ajax hija din it-teknika
li jippermetti eżattament dan.

979
00:43:41,340 --> 00:43:44,440
Ladarba inti ħadthom żar URL,
madankollu crazy twil huwa,

980
00:43:44,440 --> 00:43:46,472
u ladarba l-paġna għandha
ġie mgħobbi, inti tista 'xorta

981
00:43:46,472 --> 00:43:48,430
grab aktar data mill-
internet-- jekk huwa

982
00:43:48,430 --> 00:43:52,460
email jew maduma ta 'map--
grab wara l-kwinti

983
00:43:52,460 --> 00:43:55,290
u mbagħad daħħalha fil-paġna tal-
sabiex il-bniedem ma verament

984
00:43:55,290 --> 00:43:56,910
ikollhom jistennew għal dan.

985
00:43:56,910 --> 00:43:58,980
>> Facebook Messenger xogħlijiet bl-istess mod.

986
00:43:58,980 --> 00:44:01,562
Kwalunkwe numru ta 'websites-- oħra
oh, fil-fatt, anke dan.

987
00:44:01,562 --> 00:44:04,270
I mean, dan huwa, franchement, tip ta '
annoying karatteristika dawn il-jiem.

988
00:44:04,270 --> 00:44:07,500
Jekk I tibda tiftix għal dan cats--
huwa tip ta 'utent esperjenza horrible.

989
00:44:07,500 --> 00:44:08,990
Hija biss jibda tiftix għalija.

990
00:44:08,990 --> 00:44:10,050
Ukoll dak li huwa dan isir?

991
00:44:10,050 --> 00:44:12,920
Il URL ma nbidlitx verament
peress I bdiet ittajpjar.

992
00:44:12,920 --> 00:44:17,330
Imma x'inhu għaddej madwar l-
wire-- OK, hmm interessanti.

993
00:44:17,330 --> 00:44:20,470
X'inhu għaddej madwar l-
wajer hawn biss gets weirder.

994
00:44:20,470 --> 00:44:21,090
>> KOLLOX SEW.

995
00:44:21,090 --> 00:44:24,670
So let me go quddiem u jispezzjona
element u jmorru l-tab Netwerk

996
00:44:24,670 --> 00:44:27,040
u jippruvaw jagħmlu dan
teknika u inqas dwar qtates.

997
00:44:27,040 --> 00:44:32,595
Tip I kif, litteralment, qtates
and-- dak li qed jiġri

998
00:44:32,595 --> 00:44:37,710
per-- Jien ma jmur biex ikklikkja dan.

999
00:44:37,710 --> 00:44:38,210
Kull dritt.

1000
00:44:38,210 --> 00:44:44,280
Allura stabbiliti hawn, dak li qed jiġri kull
time I tip karattru, apparentement?

1001
00:44:44,280 --> 00:44:45,000
Bħal, livell baxx?

1002
00:44:45,000 --> 00:44:47,860
Dak li qed jiġri ma 'kull wieħed minn dawk
karattri Jien ittajpjar fuq tastiera tiegħi?

1003
00:44:47,860 --> 00:44:48,359
Yeah?

1004
00:44:48,359 --> 00:44:50,950
UDJENZA: [inaudible].

1005
00:44:50,950 --> 00:44:52,340
>> DAVID Malan: Eżattament.

1006
00:44:52,340 --> 00:44:55,600
Kull wieħed minn dawk il-karattri hija
ser Google, wieħed kull darba.

1007
00:44:55,600 --> 00:44:58,490
Huma qegħdin jibnu sensiela
fuq is-server tagħhom li tirrappreżenta

1008
00:44:58,490 --> 00:44:59,936
kollox Stajt ittajpjat fil s'issa.

1009
00:44:59,936 --> 00:45:01,810
U kull darba I tip
karattru ieħor,

1010
00:45:01,810 --> 00:45:04,530
jużaw zalza sigrieti tagħhom ta '
tfittxija algoritmu u l-figura,

1011
00:45:04,530 --> 00:45:07,370
ma hu jfissirx din il-paġna qtates
jew din il-paġna qattus jew bħalhom?

1012
00:45:07,370 --> 00:45:10,620
Allura f'ċertu sens, huwa jipprovdi me ma '
esperjenza aħjar li jien ma anki

1013
00:45:10,620 --> 00:45:11,860
bżonn li jiġi kkompletat ħsieb tiegħi.

1014
00:45:11,860 --> 00:45:14,440
U fil-fatt, huwa utli
ħaġa, AutoComplete b'mod ġenerali.

1015
00:45:14,440 --> 00:45:17,690
Jekk algoritmi tagħhom huma tajbin biżżejjed
u jekk tfittxijiet tiegħi huma ovvji biżżejjed,

1016
00:45:17,690 --> 00:45:19,300
I ma jkollhomx biex tip-kelma sħiħa.

1017
00:45:19,300 --> 00:45:22,110
Huma qed tmur biex tell me dak li
huwa Jien attwalment tfittex.

1018
00:45:22,110 --> 00:45:25,940
Allura dak Google jitlob instant
tfittxija huwa biss bl-użu Ajax,

1019
00:45:25,940 --> 00:45:30,820
użu kodiċi li jippermettilhom li jitolbu
kontenut addizzjonali permezz ta 'web browser

1020
00:45:30,820 --> 00:45:34,026
wara l-kwinti li jużaw dan
lingwa ġdida, JavaScript.

1021
00:45:34,026 --> 00:45:35,400
Allura aħna għandna minuti koppja xellug.

1022
00:45:35,400 --> 00:45:37,710
U let me sejħa up buddy tiegħi
Colton up fuq l-istadju,

1023
00:45:37,710 --> 00:45:40,090
peress li deher
aħħar darba partikolarment gost

1024
00:45:40,090 --> 00:45:42,290
li tintroduċi teknoloġija
li xi wħud minnkom

1025
00:45:42,290 --> 00:45:44,769
esprimew interess
fl għal proġetti finali.

1026
00:45:44,769 --> 00:45:47,310
Ħsibna li d jkun gost li jġibu
up voluntier, għalkemm, illum

1027
00:45:47,310 --> 00:45:50,074
biex turi li inti żieda għall
dan li jippermetti you-- yeah,

1028
00:45:50,074 --> 00:45:50,990
Rajt dan idejn ewwel.

1029
00:45:50,990 --> 00:45:52,900
Come fuq up.

1030
00:45:52,900 --> 00:45:53,560
Isir ħafna tajjeb.

1031
00:45:53,560 --> 00:45:55,035
Xogħol tajjeb.

1032
00:45:55,035 --> 00:45:57,410
Jien ser Dan il-proġett fuq
l-iskrin fi ftit mument.

1033
00:45:57,410 --> 00:45:58,150
X'hemm isem tiegħek għal kulħadd?

1034
00:45:58,150 --> 00:45:59,180
>> EFA: Ninsab Efa.

1035
00:45:59,180 --> 00:45:59,410
>> DAVID Malan: Etha?

1036
00:45:59,410 --> 00:45:59,785
>> EFA: Efa.

1037
00:45:59,785 --> 00:46:00,160
>> DAVID Malan: Efa?

1038
00:46:00,160 --> 00:46:00,730
>> EFA: Yeah.

1039
00:46:00,730 --> 00:46:01,250
>> DAVID Malan: Nizza biex tara int.

1040
00:46:01,250 --> 00:46:01,600
Kull dritt.

1041
00:46:01,600 --> 00:46:02,590
Let me nikseb dan lesta.

1042
00:46:02,590 --> 00:46:04,423
Come fuq matul il
nofs ma Colton hawn.

1043
00:46:04,423 --> 00:46:07,050
Liema Colton għandha f'idejh
illum huwa kontroll remot.

1044
00:46:07,050 --> 00:46:10,440
Allura minflok biss joqgħod hemm fi
dinja tridimensjonali ifittxu madwar

1045
00:46:10,440 --> 00:46:14,080
kif Colton ma, issa Efa jista
fil-fatt jimxu madwar billi tmur up,

1046
00:46:14,080 --> 00:46:16,689
down, xellug, u d-dritt bħal
Nintendo jew Xbox kontrollur.

1047
00:46:16,689 --> 00:46:18,230
EFA: jien ser jaqgħu barra mill-istadju.

1048
00:46:18,230 --> 00:46:20,500
DAVID Malan: I se
stand madwar hawn.

1049
00:46:20,500 --> 00:46:21,991
Iżda dan huwa riskju.

1050
00:46:21,991 --> 00:46:22,490
KOLLOX SEW.

1051
00:46:22,490 --> 00:46:25,690
Allura aqbad u mqiegħda dawk fuq.

1052
00:46:25,690 --> 00:46:29,315
Let me imorru quddiem u
jaqilbu għall-iskrin hawn.

1053
00:46:29,315 --> 00:46:30,670
Let me dim-dwal.

1054
00:46:30,670 --> 00:46:32,780
U Colton, let me
jaslu stand li jmiss lilek.

1055
00:46:32,780 --> 00:46:35,520
>> Do inti tixtieq li tispjega hawn
bl-mic dak li aħna qed tagħmel?

1056
00:46:35,520 --> 00:46:36,380
Hawnhekk inti tmur.

1057
00:46:36,380 --> 00:46:37,280
>> COLTON: Sure.

1058
00:46:37,280 --> 00:46:39,980
Allura issa dritt aħna qed
tagħbija l-Oculus,

1059
00:46:39,980 --> 00:46:43,070
I raden operating-- ma joperawx
sistema, iżda l-programm prinċipali, fejn

1060
00:46:43,070 --> 00:46:46,630
inti tista 'aċċess l-logħob u
apps li huma fil-librerija tiegħek.

1061
00:46:46,630 --> 00:46:50,060
Allura issa dritt, għandu jkun hemm
tisfrutta l-touchpad biex tibda.

1062
00:46:50,060 --> 00:46:53,430
Touchpad għaddej biex tkun fuq il-
naħa tal-lemin tal-widna.

1063
00:46:53,430 --> 00:46:54,569
Allura aqbad u tap--

1064
00:46:54,569 --> 00:46:55,110
EFA: Oh, il-bniedem.

1065
00:46:55,110 --> 00:46:56,443
DAVID Malan: Yeah, hemm inti tmur.

1066
00:46:56,443 --> 00:47:00,340

1067
00:47:00,340 --> 00:47:02,460
Il-kwalità Efa huwa jara
huwa ta 'kwalità ħafna ogħla.

1068
00:47:02,460 --> 00:47:03,831
Dan huwa biss il Wi-Fi hawn.

1069
00:47:03,831 --> 00:47:05,580
COLTON: Allura dak li int
tmur jridu jagħmlu

1070
00:47:05,580 --> 00:47:08,350
hu li tħares lejn il-quċċata
lemini tal-iskrin.

1071
00:47:08,350 --> 00:47:10,420
Yep, din il-logħba fuq il-lemin fuq nett.

1072
00:47:10,420 --> 00:47:14,780
U allura meta inti qed tagħżel
dan, taptap il-touchpad mill-ġdid.

1073
00:47:14,780 --> 00:47:17,010
I think Dreadhalls tagħha.

1074
00:47:17,010 --> 00:47:20,820
U allura hawnhekk hija a-- hawn, let
me iżommu nuċċalijiet tiegħek għalik.

1075
00:47:20,820 --> 00:47:24,420

1076
00:47:24,420 --> 00:47:25,790
>> So I biss taw lilu kontrollur.

1077
00:47:25,790 --> 00:47:28,886
Allura issa huwa jista 'jikkontrolla l-logħba.

1078
00:47:28,886 --> 00:47:30,510
Huwa jista 'timxi madwar u għalf bħal dik.

1079
00:47:30,510 --> 00:47:31,968
Allura aqbad u jfittxu up fil-wiċċ.

1080
00:47:31,968 --> 00:47:33,640
Għandek tara New Game.

1081
00:47:33,640 --> 00:47:36,310
Allura aqbad u inti tista 'tagħmel dan.

1082
00:47:36,310 --> 00:47:39,320
Issa, inti għandek tkun kapaċi biex jikkontrollaw
ruħek mal-kontrollur,

1083
00:47:39,320 --> 00:47:43,860
kif ukoll, hekk kif
il-logħba tagħbijiet up here.

1084
00:47:43,860 --> 00:47:46,356
Dan jista 'jkun ftit scary.

1085
00:47:46,356 --> 00:47:47,300
>> EFA: Issa inti tgħidli.

1086
00:47:47,300 --> 00:47:50,132
KOLLOX SEW.

1087
00:47:50,132 --> 00:47:51,080
>> COLTON: Kull dritt.

1088
00:47:51,080 --> 00:47:52,650
Allura tikkonferma li inti tista 'timxi madwar.

1089
00:47:52,650 --> 00:47:52,750
KOLLOX SEW.

1090
00:47:52,750 --> 00:47:53,583
Inti tista 'timxi madwar.

1091
00:47:53,583 --> 00:47:54,300
Perfect.

1092
00:47:54,300 --> 00:47:56,470
Mela jekk inti tfittex l isfel, għandek mappa.

1093
00:47:56,470 --> 00:47:58,170
Mappa turi fejn int.

1094
00:47:58,170 --> 00:47:59,720
Tista 'tfittex madwar il-kamra.

1095
00:47:59,720 --> 00:48:01,440
Tista kompletament jdur.

1096
00:48:01,440 --> 00:48:02,128
Yeah, eżattament.

1097
00:48:02,128 --> 00:48:02,627
Jdur.

1098
00:48:02,627 --> 00:48:05,370

1099
00:48:05,370 --> 00:48:07,125
>> Sabiex tfittex ix-xellug tiegħek.

1100
00:48:07,125 --> 00:48:09,875
Naħseb li hemm xi ħaġa li tista
pick up fuq kanna fil-kamra.

1101
00:48:09,875 --> 00:48:11,709
>> EFA: Kif nista 'nikseb il-
Mappa barra mill-mod?

1102
00:48:11,709 --> 00:48:12,375
COLTON: Ħares up.

1103
00:48:12,375 --> 00:48:12,980
Biss ħarsa up.

1104
00:48:12,980 --> 00:48:13,480
Kull dritt.

1105
00:48:13,480 --> 00:48:13,765
Hemm inti tmur.

1106
00:48:13,765 --> 00:48:15,181
Issa aqbad u biss jdur.

1107
00:48:15,181 --> 00:48:21,460

1108
00:48:21,460 --> 00:48:24,620
Sabiex tfittex farther ix-xellug tiegħek.

1109
00:48:24,620 --> 00:48:25,530
Żomm miexja xellug.

1110
00:48:25,530 --> 00:48:26,960
Ikompli jfittex xellug.

1111
00:48:26,960 --> 00:48:27,541
Jibqgħu għaddejjin.

1112
00:48:27,541 --> 00:48:28,040
Yeah.

1113
00:48:28,040 --> 00:48:28,720
>> EFA: Oh, li mod.

1114
00:48:28,720 --> 00:48:29,261
>> COLTON: Yeah.

1115
00:48:29,261 --> 00:48:30,999
Walk lejh mal-kontrollur.

1116
00:48:30,999 --> 00:48:31,540
Hemm inti tmur.

1117
00:48:31,540 --> 00:48:32,790
Issa għandha tgħid pick it up.

1118
00:48:32,790 --> 00:48:33,360
Hemm inti tmur.

1119
00:48:33,360 --> 00:48:34,290
Pick it up.

1120
00:48:34,290 --> 00:48:35,550
Kull dritt.

1121
00:48:35,550 --> 00:48:38,286
Issa, ejja tikseb minn din il-kamra.

1122
00:48:38,286 --> 00:48:42,209
Jimxi 'l quddiem u jimxu għal dak il-bieb.

1123
00:48:42,209 --> 00:48:45,000
Allura int ser hold-- jgħid
żomm il-buttuna seħħ hija miftuħa.

1124
00:48:45,000 --> 00:48:46,333
Allura aqbad u żomm il-buttuna.

1125
00:48:46,333 --> 00:48:48,250
Yep, furzar hija miftuħa.

1126
00:48:48,250 --> 00:48:48,750
Kull dritt.

1127
00:48:48,750 --> 00:48:49,410
Xogħol tajjeb.

1128
00:48:49,410 --> 00:48:50,826
Issa aħna qed mixi barra mill-kamra.

1129
00:48:50,826 --> 00:48:56,970

1130
00:48:56,970 --> 00:49:01,366
Hekk jien ser tħalli l-bqija up
lilek u tara dak li inti taf.

1131
00:49:01,366 --> 00:49:02,865
EFA: Jien ma jmur fil-kamra dlam.

1132
00:49:02,865 --> 00:49:07,315

1133
00:49:07,315 --> 00:49:07,815
Oh, stenna.

1134
00:49:07,815 --> 00:49:09,314
Issa I ikollhom imorru r-sala dlam?

1135
00:49:09,314 --> 00:49:10,785
OK, jien ser lura [inaudible].

1136
00:49:10,785 --> 00:49:15,520

1137
00:49:15,520 --> 00:49:16,270
COLTON: Kull dritt.

1138
00:49:16,270 --> 00:49:17,560
Xi punti aktar biex pick up.

1139
00:49:17,560 --> 00:49:19,370
Id-Dehra xi muniti.

1140
00:49:19,370 --> 00:49:22,242
Li pick lock.

1141
00:49:22,242 --> 00:49:24,200
Mela jekk inti ssib msakkra
bieb, inti tista 'tuża dan.

1142
00:49:24,200 --> 00:49:27,755

1143
00:49:27,755 --> 00:49:28,380
Inti jibża?

1144
00:49:28,380 --> 00:49:29,371
>> EFA: Għadha mhix.

1145
00:49:29,371 --> 00:49:29,871
COLTON: OK.

1146
00:49:29,871 --> 00:49:34,850

1147
00:49:34,850 --> 00:49:35,497
>> Pretend-- yeah.

1148
00:49:35,497 --> 00:49:37,330
Just nippretendu int
attwalment permanenti hemmhekk.

1149
00:49:37,330 --> 00:49:39,580
U jekk inti mbagħad around--
inti stajt ltqajna biex jidraw lilha.

1150
00:49:39,580 --> 00:49:40,752
Iżda dan jagħmel sens.

1151
00:49:40,752 --> 00:49:43,960
DAVID Malan: U filwaqt Efa tkompli
play, peress stajna nagħmlu dan ġurnata kollha,

1152
00:49:43,960 --> 00:49:45,381
nistgħu kollha toe ponta out here.

1153
00:49:45,381 --> 00:49:48,130
Iżda aħna ma jkollhom żewġ pari oħra,
jekk inti tixtieq li toħroġ u play.

1154
00:49:48,130 --> 00:49:49,980
Inkella, se naraw
inti jmiss nhar l-Erbgħa.

1155
00:49:49,980 --> 00:49:51,354
Grazzi għal voluntier tagħna llum.

1156
00:49:51,354 --> 00:49:52,101
[Applause]

1157
00:49:52,101 --> 00:49:54,506

1158
00:49:54,506 --> 00:49:57,392
>> [MUSIC - "TEMA Seinfeld"]

1159
00:49:57,392 --> 00:49:58,222

1160
00:49:58,222 --> 00:50:00,180
SPEAKER 1: Well, jien
tqegħid PL ġdid impunjazzjoni fuq.

1161
00:50:00,180 --> 00:50:01,800
I biss biddel il-OLPF--

1162
00:50:01,800 --> 00:50:03,980
>> SPEAKER 2: Allura dak li
eżattament huma inti tagħmel?

1163
00:50:03,980 --> 00:50:07,063
>> SPEAKER 1: Well, kull wieħed mill these--
hawn, I ser nuruk dan wieħed fil hawn.

1164
00:50:07,063 --> 00:50:08,690
Tista 'tara dan id-dritt hawn.

1165
00:50:08,690 --> 00:50:09,510
>> SPEAKER 3: Naħseb jien tajba ma 'dawn.

1166
00:50:09,510 --> 00:50:09,933
Inti tixtieq ftit aktar?

1167
00:50:09,933 --> 00:50:11,325
>> SPEAKER 4: Le, jien tajba. [Inaudible].

1168
00:50:11,325 --> 00:50:12,200
>> SPEAKER 3: Le, [inaudible].

1169
00:50:12,200 --> 00:50:12,700
Għandhom xi.

1170
00:50:12,700 --> 00:50:21,165

1171
00:50:21,165 --> 00:50:22,290
SPEAKER 1: kulur differenti.

1172
00:50:22,290 --> 00:50:22,890
SPEAKER 2: OK.

1173
00:50:22,890 --> 00:50:26,690
SPEAKER 1: Allura finalment dak li
ma huwa taġġusta l-kulur of--