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>> ROGER ZURAWICKI: Hello kulħadd.

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Nista 'tikseb l-attenzjoni tiegħek?

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Grazzi, guys.

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Illum nixtieq li nitkellmu dwar Meteor.

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Dan huwa qafas JavaScript.

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Aħna ser jkunu għaddejjin minn kif tista '
jagħmlu apps web verament jibred.

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>> Qabel ma nikbru fis JavaScript, I biss
tixtieq biex jgħidlek guys li dan se

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jkun - inti ser ikollok aktar tard
biċċa dan is-semestru.

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Għandu jkun ta 'madwar JavaScript.

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I think [inaudible] hija l-ewwel ser
ikopru l-għalf PHP web HTML qabel we

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jimxu lejn JavaScript.

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U fl CS50, JavaScript huwa meqjus
bħal kodiċi klijent.

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Għalhekk biss gets jimxu
l-web browser.

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>> Iżda grazzi għall-avvanzi riċenti fil
teknoloġija, aħna issa rnexxielhom jimxu

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JavaScript bħala server kif ukoll.

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Allura dan ħoloq verament jibred
qafas għaliex issa inti tista 'tikteb

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leġittimament-istess kodiċi għall
il-klijent u s-server.

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U meta inti tiddefinixxi funzjonijiet tiegħek
server, klijent tiegħek jista 'sejħa dawk

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istess funzjonijiet.

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U jagħmilha ħafna aktar faċli.

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Billi qabel, jekk inti qed tuża PHP fuq
l-server, JavaScript fuq il-front

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aħħar, inti għandek tikteb funzjoni PHP
u mbagħad verżjoni JavaScript tal-

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istess funzjoni biex jagħmlu l-
istess tip ta 'xogħol.

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>> Allura qabel we tibda, nixtieq
biex turi li inti demo ta 'dak

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Meteor jista 'jagħmel għalik.

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I ser nuruk l-demo, li huwa dak
inti ser tkun kapaċi joħolqu mill-

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tmiem ta 'dan is-seminar.

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Aħna biss jmorru dritt hawn.

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Dan huwa app Leaderboard.

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Huwa fil-fatt bbażati barra ta 'l-eżempju
li Meteor jagħtik.

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>> Meteor huwa sabiħ ħafna għaliex meta inti
jinstallaw bħala pakkett, inti tista '

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bażikament play madwar
dawn l-erba demos.

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U l-Leaderboard huwa l-
ewwel minn dawn demos.

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Wara l-seminar, I ninkoraġġukom kollha
biss tesplora l-demos oħra

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għaliex naħseb li qed verament jibred, u
dawn juru inti l-qawwa ta 'Meteor.

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>> Allura dak li din hija, dan huwa
ospitati fuq Leaderboard.

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Dan huwa biss franchement lista ta 'ismijiet.

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U inti tista 'tagħżel nies.

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Huma dawran isfar.

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U allura inti tista 'tagħti
minnhom ħames punti.

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U inti ser ikollok avviż li l-lista hija
Issortjati għaliex kif I jagħtu myself aktar

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u aktar punti, jien issa fil-quċċata.

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Allura dan huwa fejn nibdew.

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>> U dak li inti ser tkun tista 'tieħu l bogħod
minn dan is-seminar huwa ftit aktar

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karatteristiċi Stajt miżjuda mal
l-Leaderboard.

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Aħna ser tkun tkopri kif, kif ukoll
żid ħames punti għal player, nistgħu

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tħassar players, nistgħu żid parteċipanti ġodda,
u nistgħu jagħżlu kif irridu

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biex sort lilhom.

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U dawn huma kollha faċli ħafna sejħiet API
li Meteor jipprovdi għalik.

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Inti ukoll għandek karatteristika hawn
biex randomize-punteġġi.

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>> Allura x'hemm verament jibred dwar dan
huwa inti guys tista 'attwalment

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kollha jmorru għall-sit.

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I ser poġġih fil test akbar hawnhekk.

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One-radikali ċomb erboard.meteor.com.

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U meta inti guys tmur għall-sit, inti
għandhom ikunu kapaċi li jeditjaw-sit, u

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kollha ta 'modifiki tiegħek se jkun viżibbli
għal kulħadd.

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Allura inti tista '- huma inti guys kollha
kapaċi li jgħaqqdu l-post?

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Allura play madwar miegħu.

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Mur u tibda tħassar xi ismijiet.

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Tara x'jiġri.

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>> Allura inti tara kulħadd tista 'tilgħab.

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Dan huwa biss is-sigurtà default
mode għal Meteor.

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Tara li kulħadd jista '
jibdlu data ta 'xulxin.

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Tinkwetax.

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Meteor ma jkollhom sigurtà.

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Dan huwa implimentat faċilment
karatteristika, fejn inti tista 'twaqqaf l-utenti

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u logins.

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Imma issa dritt, xi ħadd li żjarat il-
sit tista 'tagħti lilhom infushom bħala ħafna

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jindika kif jixtiequ.

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So I dejjem bħal dan għaliex dan
huwa mod divertenti biex tibda.

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U allura aħna ser biss jitkellmu
dwar id-dettalji, kif

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Meteor jagħmel dan possibbli.

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>> Hekk jien ser ikopru dak Meteor hija,
u allura aħna ser bżonn biss biex tkopri l-

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żewġ prerekwiżiti li CS50
ma kopert biżżejjed.

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Iżda mill-aħħar tat-terminu, għandek
tkun komda ma 'kemm HTML u

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JavaScript biex verament tikseb idejk
maħmuġa jaħdmu ma Meteor.

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U naħseb huwa biss mod tajjeb ħafna għall-
anke inqas komdi istudenti biex jagħmlu

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proġetti finali għaliex dawn jistgħu verament
jibqgħu b'lingwa waħda, u huma jiksbu

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tara l-bidliet ta 'tagħhom
taħdem dritt bogħod.

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>> Allura dan slide turi biss ftit mill-
teknoloġiji ewlenin li Meteor JS

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tagħti lilek.

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Meteor mhix teknoloġija ġdida
waħdu.

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Huwa tassew conglomeration ta '
dawn l-affarijiet differenti

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għandna fuq l-internet.

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Kif ukoll HTML, CSS, JavaScript, aħna
jkollhom xi teknoloġiji bħall Node.js,

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li huwa dak li jippermetti li inti run
JavaScript fuq l-aħħar lura fuq tiegħek

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server, kif ukoll xi JavaScript
libreriji, bħal jQuery, jenfasizzaw.

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>> Kollha ta 'dawn se jkunu familjari
inti sa l-aħħar tas-semestru.

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U aħna wkoll tikseb biex jużaw database imsejjaħ
mongoDB, li huwa verament

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database popolari issa għal
dawn fetħu ġodda.

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Inti tista 'taħseb bħala bħal MySQL, iżda
taħdem ħafna nicely mal JavaScript.

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U hemm xi teknoloġiji oħra hawn
u ħafna aktar jien mhux elenkati

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li kollha interface verament
nicely ma 'Meteor.

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>> I jkollu jpoġġi din slide minħabba
kultant I nikseb konfużjoni dwar dan.

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Meteor huwa biss JavaScript.

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Mhuwiex PHP.

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Mhuwiex Ruby fuq binarji.

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Mela jekk inti jikteb il-kodiċi, jekk inti tixtieq li
jiktbu proġett Meteor, int verament

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ma jistgħux jużaw kodiċi Ruby.

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Int verament ma jużawx PHP.

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>> Filwaqt li aħna ser tara li d-differenzi
kodiċi u s-sintassi ma tista 'tkun li

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differenti, nixtieq nenfasizza li inti li
Meteor, dak kollu li għandek kodiċi hija

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biss JavaScript.

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U dak kollu li inti juru li
l-utent se tkun CSS HTML.

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Imma int ma attwalment jużaw xi wieħed
il-lingwi l-oħra li l-oħra

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seminars jistgħu ikopru.

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What Meteor wkoll huwa huwa web server.

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Għalhekk anki jekk inti ma għandekx xi
JavaScript, u ​​inti biss tixtieq li jservu

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CSS u HTML files, Meteor
tista 'tagħmel dan għalik.

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>> U hawnhekk l-link għal darb'oħra biex il-
demo li sibt inti guys

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bdew jilagħbu bil.

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Imma ejja jimxu fuq HTML.

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Kif ħafna nies hawn jkollhom
ebda idea dak HTML hu?

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OK kbir.

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U li huwa kompletament multa.

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Int verament ma bżonn tkun taf ħafna dwar
għaliex aħna se jmorru fuq il-

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użu ħafna sempliċement.

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>> Dan huwa dak li l-sempliċi
Paġna HTML qisu.

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Dan jista 'jkun simili tiegħek hello, dinja għal
HTML, filwaqt li bdejna fis-C ma '

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hello, dinja.

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Ma rridx li inti istress fuq il-
dettalji ta 'dak HTML, liema ras, dak

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ġisem, liema titolu qed tagħmel hemmhekk.

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I biss jixtiequ jenfasizzaw l-istruttura,
kif għandek tags.

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U li l-parentesi angolu.

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U li fejn għandek
deskritturi tiegħek.

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>> Allura inti jista 'jkollok id-dokument HTML.

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U allura inti ser tagħlaq il-dokument HTML
bl backslash istess ħaġa.

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U inti għandek tipi differenti ta 'tikketti.

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U tinnota li dawn qed kollha mqabbla.

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Int ser ikollok bħal tag korp
u mbagħad tag korp qrib.

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U ġewwa l-tikketta ġisem, li ser tkun
il-kontenut tal-paġna web tiegħek.

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Allura din il-paġna web sempliċiment juri
fi sfond abjad u iswed test

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hello, dinja.

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Does li jagħmel sens?

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OK.

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>> Issa jien ser malajr
tkopri JavaScript.

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Fil-kliem ta 'TF' qabel,
"JavaScript huwa l-aħjar programmazzjoni

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lingwa li jeżistu attwalment.

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Nies oħra se jippruvaw
jgħidlek mod ieħor.

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Huma żbaljati. "JavaScript huwa pretty
sbieħ, u jien ser jurik għaliex.

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152
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>> Allura dan huwa l-eżempju klassiku nibdew
magħhom C. Għandna hello, dinja.

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U tinnota li anki jekk inti tiċkien
dan, inti trid li jkollha mill-inqas żewġ

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linji ta 'kodiċi hawn.

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I jkollhom diversi linji ta 'kodiċi.

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Dan jista 'jsir ħafna sempliċement.

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Linja waħda JavaScript ma console.log,
u mbagħad string tiegħek,

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hello, dinja.

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>> Issa, anke jekk aħna qed jiċċaqilqu għal ġdida
lingwa JavaScript, kważi kollha tal-

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ħiliet inti stajt tgħallmu mill coding
fis-C huma direttament portabbli.

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Allura kordi, l-idea tal-irbit
kwotazzjonijiet doppja, dak l-istess.

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Il-virgola, dak l-istess.

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>> Karatteristika pulita dwar JavaScript
attwalment huwa li inti

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m'għandhomx bżonn l-virgola.

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Hija tista 'raden li għandek
tpoġġi virgola hemmhekk.

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Iżda dak imsemmi, għandek dejjem jippruvaw
jitqiegħdu semicolons tiegħek hemmhekk.

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Huwa meqjus stil tajjeb.

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U wkoll, hemm ebda funzjoni prinċipali.

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Inti biss tibda fil-quċċata tal-fajl
u aqra l-affarijiet linja b'linja.

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>> Allura dan huwa dak li tieħu biex tagħmel
li hello, programm dinja.

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U allura avviż li inti għandek
jagħmlu bonjour u mbagħad run bonjour.

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Bil JavaScript, huwa meqjus
lingwa interpretat.

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Dak li għandek bżonn tkun taf hija li
m'hemm l-ebda teħid.

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>> M'hemm l-ebda jikkompilaw.

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Inti biss run node.

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U ftakar node huwa l-programm li
se jimxu tiegħek JavaScript fuq console,

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fuq kaxxa sewda, mhux il-website.

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Allura inti biss jagħtu l-fajl, u huwa
morna għall-istampa hello, dinja.

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>> I ser attwalment jagħmlu demo ftit ta '
li għalik guys dritt hawn.

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Mela ejja jmorru fuq biex tiegħi
Terminal Node.js.

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OK.

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Ejja jimxu hawn.

185
00:09:06,150 --> 00:09:07,930
Hekk jien ser tibda node.

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U jien ser nuruk guys biss
sek kif tikseb dak

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installat, jekk inti ma.

188
00:09:12,000 --> 00:09:14,800
Let me tagħmel dik daqsxejn akbar.

189
00:09:14,800 --> 00:09:17,800

190
00:09:17,800 --> 00:09:17,870
OK.

191
00:09:17,870 --> 00:09:20,120
Nispera li inti guys tista 'tara.

192
00:09:20,120 --> 00:09:27,390
>> So I tista 'tikteb kodiċi bħal I ma
qabel fil console.log.

193
00:09:27,390 --> 00:09:28,915
Hi, Roger.

194
00:09:28,915 --> 00:09:31,710

195
00:09:31,710 --> 00:09:35,330
U tinnota jien ma jkollhom jagħmlu l-
virgola, iżda mbagħad I nikseb dan stramb

196
00:09:35,330 --> 00:09:36,850
ħaġa undefined.

197
00:09:36,850 --> 00:09:40,310
Ukoll fil-fatt, qatt f'moħħhom dwar
il-ħaġa undefined.

198
00:09:40,310 --> 00:09:43,590
Things I jixtiequ inti avviż huwa li inti
m'għandhomx bżonn l-funzjoni prinċipali hawnhekk

199
00:09:43,590 --> 00:09:45,050
li bdiet tgħodd kodiċi.

200
00:09:45,050 --> 00:09:46,790
U hemm l-ebda għan backslash.

201
00:09:46,790 --> 00:09:50,683
Hemm xi karatteristiċi ftit li
JavaScript jista 'jagħmel għalik.

202
00:09:50,683 --> 00:09:53,510
>> UDJENZA: [inaudible].

203
00:09:53,510 --> 00:09:54,000
>> ROGER ZURAWICKI: Oh yeah.

204
00:09:54,000 --> 00:09:57,460
Jien sorry dwar dan.

205
00:09:57,460 --> 00:10:02,200
U dan vleġġa ifisser biss node
hija lesta għall-ieħor kmand.

206
00:10:02,200 --> 00:10:05,380
Allura inti jista 'jkollhom jagħmlu sempliċi
matematika, bħall 1 flimkien ma '1.

207
00:10:05,380 --> 00:10:10,360
U bħad fis-C, dawn matematika
simboli huma biss l-istess.

208
00:10:10,360 --> 00:10:13,750
I tista 'tagħmel console.log ta' numru.

209
00:10:13,750 --> 00:10:15,090
U allura prints tnejn.

210
00:10:15,090 --> 00:10:19,000
JavaScript huwa sbieħ f'dan is-sens minħabba
anke jekk tnejn huwa int,

211
00:10:19,000 --> 00:10:22,020
bħal fil-C, jekk inti ma printf ma
tnejn, inti se tikseb żball.

212
00:10:22,020 --> 00:10:24,140
>> Iżda JavaScript jaf, oh, int
istampar xi ħaġa.

213
00:10:24,140 --> 00:10:25,070
Jien ser jeħtieġu string.

214
00:10:25,070 --> 00:10:28,410
So let me jikkonvertu li tnejn
ġo string għalik.

215
00:10:28,410 --> 00:10:34,970
U inti tista 'ukoll tagħmel xi għalf stramb
simili hi u mbagħad flimkien ma 'tnejn.

216
00:10:34,970 --> 00:10:39,520
Dan huwa biss eżempju ieħor kif żewġ
jista 'jiġi konvertit fil hemm ukoll.

217
00:10:39,520 --> 00:10:45,135
>> Allura ma 'dak il-mod, ejja
biss ikopru daqsxejn aktar JavaScript.

218
00:10:45,135 --> 00:10:48,660

219
00:10:48,660 --> 00:10:50,540
Allura fil-C, għandna tipi.

220
00:10:50,540 --> 00:10:53,925
Kull meta ħloqna varjabbli ġdid, aħna
ngħid li huwa huwa char * jew

221
00:10:53,925 --> 00:10:55,850
string fil-każ CS50.

222
00:10:55,850 --> 00:10:58,350
Jew jekk kellna numru deċimali,
aħna kellhom jgħidu float.

223
00:10:58,350 --> 00:11:00,690
Jekk aħna meħtieġa Boolean,
kellna ngħid b.

224
00:11:00,690 --> 00:11:04,220
U mbagħad darba kellna xi ħaġa li
ġie B, li kellhom jibqgħu a bool.

225
00:11:04,220 --> 00:11:07,360
Aħna ma setgħux magically bidla li
li int sakemm aħna kiteb fil-

226
00:11:07,360 --> 00:11:09,450
parentesi, int tad b.

227
00:11:09,450 --> 00:11:11,820
>> Fil JavaScript, m'hemm l-ebda tipi.

228
00:11:11,820 --> 00:11:13,350
Inti biss jaħsbu bħala var.

229
00:11:13,350 --> 00:11:15,270
U var huwa kif inti toħloq tip ġdid.

230
00:11:15,270 --> 00:11:19,210
Allura dan jista 'jkollu var i tkun string,
var n ikun float,

231
00:11:19,210 --> 00:11:21,230
u var b veri.

232
00:11:21,230 --> 00:11:24,980
U ħaġa waħda li inti ma tistax tagħmel C hija
I issa jistgħu jgħidu, wara dik il-linja, b

233
00:11:24,980 --> 00:11:26,230
ugwali integer.

234
00:11:26,230 --> 00:11:27,400
U li jaħdem biss multa.

235
00:11:27,400 --> 00:11:30,840
Billi fis-C, hija ngħid simili
integer tiegħek mhix bool.

236
00:11:30,840 --> 00:11:32,770
I ma tistax tagħmel dan għalik.

237
00:11:32,770 --> 00:11:34,050
Jew [inaudible] tarmi żball.

238
00:11:34,050 --> 00:11:37,970

239
00:11:37,970 --> 00:11:43,420
>> And I jistgħu malajr tmur lura fil node u
juru xi wħud li l-funzjonalità.

240
00:11:43,420 --> 00:11:44,960
So I jista 'jkollhom var a.

241
00:11:44,960 --> 00:11:52,120
Sejħa hija "Apple." Allura issa meta I jistampaw,
I nikseb string tiegħi, "Apple." Imma nista '

242
00:11:52,120 --> 00:11:54,900
ukoll issa ngħid ugwali 3.

243
00:11:54,900 --> 00:11:56,610
U avviż hemm l-ebda żball.

244
00:11:56,610 --> 00:12:00,630
U issa ugwali 3.

245
00:12:00,630 --> 00:12:01,880
Kwalunkwe mistoqsijiet s'issa?

246
00:12:01,880 --> 00:12:07,030

247
00:12:07,030 --> 00:12:07,570
Iva.

248
00:12:07,570 --> 00:12:10,780
>> UDJENZA: Stenna, hekk console.log
hija bażikament printf, right?

249
00:12:10,780 --> 00:12:12,180
>> ROGER ZURAWICKI: Console.log
huwa printf tiegħek.

250
00:12:12,180 --> 00:12:12,652
>> UDJENZA: Dritt.

251
00:12:12,652 --> 00:12:17,844
Allura kif come jekk inti biss tip tmien
jew [inaudible], dak ma li

252
00:12:17,844 --> 00:12:18,790
[Inaudible]?

253
00:12:18,790 --> 00:12:19,160
>> ROGER ZURAWICKI: Dritt.

254
00:12:19,160 --> 00:12:21,690
Għalhekk huwa -

255
00:12:21,690 --> 00:12:24,240
l-għalf aħdar gets stampati
fil-console.

256
00:12:24,240 --> 00:12:27,050
U dak li aħna ser tara li jmiss huwa
meta aħna jimxu lejn il-web

257
00:12:27,050 --> 00:12:29,300
paġna, aħna mhux se tkun qiegħda tagħmel -

258
00:12:29,300 --> 00:12:32,650
JavaScript se jkun li jkollhom HTML
template, li jiena ser tkopri fl-

259
00:12:32,650 --> 00:12:34,730
Meteor parti tas-seminar.

260
00:12:34,730 --> 00:12:38,730
U li fejn inti tista 'tgħid, agħti lili
il-valur ta ', u se tpoġġi fil-

261
00:12:38,730 --> 00:12:39,920
website tiegħek.

262
00:12:39,920 --> 00:12:42,520
Minħabba li kull web browser attwalment
għandha ftit console.

263
00:12:42,520 --> 00:12:46,380
U jekk inti ħares b'attenzjoni kbira, inti
se tikseb xi informazzjoni, bħal tiegħek

264
00:12:46,380 --> 00:12:51,210
printf s jidhru hemmhekk ma
kull paġna web inti tagħbija.

265
00:12:51,210 --> 00:12:53,580
>> UDJENZA: Kif rwieħkom
għall-iskrin qoxra?

266
00:12:53,580 --> 00:12:57,680
>> ROGER ZURAWICKI: Allura hemm kmand
imsejħa node, u niġu ma Meteor.

267
00:12:57,680 --> 00:13:01,230
So I ser biss nieqaf minn hemmhekk.

268
00:13:01,230 --> 00:13:03,580
Node huwa l-programm li
runs JavaScript.

269
00:13:03,580 --> 00:13:07,070
Jekk inti tmur meteor.com, inti
tista 'tinstalla Meteor, u

270
00:13:07,070 --> 00:13:08,480
Meteor jiġi ma node.

271
00:13:08,480 --> 00:13:11,470
Minħabba Meteor hija biss ġabra
kollha dawn il-pakketti ta 'softwer.

272
00:13:11,470 --> 00:13:15,280
Meta nikbru għall-eżempju tagħna, I se
jimxu kulħadd permezz installazzjoni

273
00:13:15,280 --> 00:13:17,625
Meteor, u allura inti tista 'tilgħab
ma node yourself.

274
00:13:17,625 --> 00:13:22,154

275
00:13:22,154 --> 00:13:23,980
OK, kbir.

276
00:13:23,980 --> 00:13:29,640
>> Allura fattur ieħor kbir dwar ix-xogħol
ma JavaScript huwa loops huma l-istess.

277
00:13:29,640 --> 00:13:31,430
Pretty ħafna eżattament l-istess.

278
00:13:31,430 --> 00:13:35,530
Għal loops, filwaqt loops, do
filwaqt loops, jekk ieħor.

279
00:13:35,530 --> 00:13:36,880
Dan kollu l-istess mal-braces.

280
00:13:36,880 --> 00:13:38,540
Huwa l-istess sintassi.

281
00:13:38,540 --> 00:13:41,350
Fil-każ ta 'għall loop, il-ftit
dettall li inti għandek tħallas attenzjoni

282
00:13:41,350 --> 00:13:45,340
li huwa minflok int i egwali għal 0,
irridu ngħidu i var ikun egwali għal 0.

283
00:13:45,340 --> 00:13:49,580
Iżda li minħabba l-varjabbli
tipi li tkellimna dwar qabel.

284
00:13:49,580 --> 00:13:53,360
>> Avviż li l printf isir
log, a console.log.

285
00:13:53,360 --> 00:13:57,370
U aħna ma bżonn tagħmel fil-mija
p backslash n u mbagħad jgħaddu i.

286
00:13:57,370 --> 00:13:58,380
Tista 'biss jgħidu i.

287
00:13:58,380 --> 00:14:01,910
U jkun jistampaw il-numri
minn żero għal erbgħa.

288
00:14:01,910 --> 00:14:04,830
Jekk inti guys tixtieq li jippruvaw dan, għaliex
inti aġġornati punt tajjeb.

289
00:14:04,830 --> 00:14:08,730
Jekk int riedu biex imexxu dan il-kodiċi fuq tiegħek
browser stess, jien nirrakkomanda li

290
00:14:08,730 --> 00:14:11,040
kulħadd jiftaħ Google Chrome.

291
00:14:11,040 --> 00:14:14,220
Google Chrome jew kwalunkwe web browser verament,
imma I simili Google Chrome

292
00:14:14,220 --> 00:14:17,350
għaliex dan huwa ħafna standardizzat.

293
00:14:17,350 --> 00:14:24,240
>> Inti tista 'tmur, jiena nemmen, jekk inti dritt
ikklikkja fuq kwalunkwe website, biss fil-

294
00:14:24,240 --> 00:14:26,880
l-ispazju abjad, tkun taf tara għażla
imsejħa Spezzjona Element.

295
00:14:26,880 --> 00:14:28,810
Huwa ġeneralment l-aħħar wieħed.

296
00:14:28,810 --> 00:14:32,630
U meta inti ikklikkja, għandek tikseb
ħaġa li l-qiegħ jidhru hawn.

297
00:14:32,630 --> 00:14:35,840

298
00:14:35,840 --> 00:14:37,780
Let me zoom fil hawn.

299
00:14:37,780 --> 00:14:41,390
U għandna tabs ftit hawn.

300
00:14:41,390 --> 00:14:43,580
Il-waħda inti kura dwar huwa console.

301
00:14:43,580 --> 00:14:48,820
>> U dan huwa JavaScript console
li inti issa tista 'taħdem ma.

302
00:14:48,820 --> 00:14:49,370
Great.

303
00:14:49,370 --> 00:14:52,560
So I tista tip fl-istess għalf
I kien ittajpjar qabel fl node.

304
00:14:52,560 --> 00:14:54,790
Wieħed plus wieħed huwa tnejn.

305
00:14:54,790 --> 00:14:59,110
Var a ugwali "Apple".

306
00:14:59,110 --> 00:15:03,430
U mbagħad I d jistampa,
u huwa "Apple".

307
00:15:03,430 --> 00:15:08,760
Allura fi kwalunkwe web browser, Firefox, Chrome,
Safari, tkun xi tkun tuża, bħala

308
00:15:08,760 --> 00:15:11,240
Sakemm ikollok aċċess għal JavaScript
console, l-istess tip ta '

309
00:15:11,240 --> 00:15:15,520
kodiċi I kien għaddej fl node inti
tista 'taħdem fil tiegħek console.

310
00:15:15,520 --> 00:15:17,530
>> UDJENZA: [inaudible]?

311
00:15:17,530 --> 00:15:18,690
>> ROGER ZURAWICKI: Kif
jiksbu l-console?

312
00:15:18,690 --> 00:15:22,880
Int għandek dritt ikklikkja fuq l-ispazju vojt
fuq il-paġna, u mbagħad inti tmur

313
00:15:22,880 --> 00:15:26,100
Spezzjona Element.

314
00:15:26,100 --> 00:15:28,290
Allura fil-fatt, nixtieq inti guys
biss tagħmel żgur li int tista '

315
00:15:28,290 --> 00:15:29,860
Spezzjona Element fil Chrome.

316
00:15:29,860 --> 00:15:32,630
U ara meta inti tip f'xi
kodiċi fil-console

317
00:15:32,630 --> 00:15:33,880
li hija tiġġestixxi kif suppost.

318
00:15:33,880 --> 00:16:15,820

319
00:16:15,820 --> 00:16:18,430
Ħossok liberu li jistaqsu mistoqsijiet jekk
xi ħaġa mhux ċar hawn.

320
00:16:18,430 --> 00:16:23,340

321
00:16:23,340 --> 00:16:24,590
>> UDJENZA: [inaudible].

322
00:16:24,590 --> 00:16:27,280

323
00:16:27,280 --> 00:16:28,200
>> ROGER ZURAWICKI: Kull tip, dritt.

324
00:16:28,200 --> 00:16:31,370
Hemm tip wieħed biss għal kulħadd
varjabbli fil JavaScript.

325
00:16:31,370 --> 00:16:34,160
U meta inti għandek tiddikjara
varjabbli, inti tgħidli var.

326
00:16:34,160 --> 00:16:35,410
>> UDJENZA: [inaudible].

327
00:16:35,410 --> 00:16:39,010

328
00:16:39,010 --> 00:16:40,050
>> ROGER ZURAWICKI: Yeah.

329
00:16:40,050 --> 00:16:43,730
Hija ma, iżda fl JavaScript, huwa ferm
smart dwar l-allokazzjoni tal-memorja.

330
00:16:43,730 --> 00:16:44,600
M'hemm l-ebda malloc.

331
00:16:44,600 --> 00:16:45,780
M'hemm l-ebda b'xejn.

332
00:16:45,780 --> 00:16:48,490
Allura inti m'għandekx bżonn ninkwetaw dwar dan.

333
00:16:48,490 --> 00:16:51,140
Li fattur ieħor sbieħ li
JavaScript jipprovdi inti.

334
00:16:51,140 --> 00:16:56,990

335
00:16:56,990 --> 00:16:58,440
>> So I tixtieq li jimxu fuq.

336
00:16:58,440 --> 00:17:01,360
Ikun li jkun OK?

337
00:17:01,360 --> 00:17:02,610
OK.

338
00:17:02,610 --> 00:17:04,780

339
00:17:04,780 --> 00:17:07,720
Great.

340
00:17:07,720 --> 00:17:10,660
>> UDJENZA: Jien biss trouble wara
konstatazzjoni tal-[? Spezzjona Element. ?]

341
00:17:10,660 --> 00:17:13,609

342
00:17:13,609 --> 00:17:16,250
>> ROGER ZURAWICKI: jistenna hekk Safari
daqsxejn differenti, imma int

343
00:17:16,250 --> 00:17:18,599
jkollhom Chrome jew Firefox?

344
00:17:18,599 --> 00:17:21,619
Dawk huma l-aktar faċli
dawk li jaħdmu magħhom.

345
00:17:21,619 --> 00:17:25,079
U għall-proġetti tiegħek, nirrakkomanda
teħel mal-browser waħda minħabba

346
00:17:25,079 --> 00:17:29,610
int ser tingħata ħafna ta 'bugs kważi
għaliex kull browser tittratta

347
00:17:29,610 --> 00:17:31,980
JavaScript HTML ftit differenti.

348
00:17:31,980 --> 00:17:35,170
So I think ħajja tiegħek se jkun ħafna
aktar faċli jekk inti twaħħal Chrome minħabba

349
00:17:35,170 --> 00:17:37,052
huwa disponibbli fuq il-magni kollha.

350
00:17:37,052 --> 00:17:38,790
U huwa browser pretty popolari.

351
00:17:38,790 --> 00:17:59,860

352
00:17:59,860 --> 00:18:01,110
OK?

353
00:18:01,110 --> 00:18:03,310

354
00:18:03,310 --> 00:18:06,370
>> Allura l-tema li jmiss li għandna
ikopru b'mod JavaScript -

355
00:18:06,370 --> 00:18:07,730
Jien sorry dwar l-ifformattjar hawn.

356
00:18:07,730 --> 00:18:11,630
I kellha biex tistira it-pjastri biex jaqblu
il-projector bi skrin wiesa '.

357
00:18:11,630 --> 00:18:14,750
Imma I issa tixtieq li nitkellmu dwar
kif inti tagħmel funzjonijiet.

358
00:18:14,750 --> 00:18:17,410
Fl C, għandna biex jiddikjaraw
kull funzjoni.

359
00:18:17,410 --> 00:18:22,130
Bħal int żid, u huwa jieħu int fis
x, u y int, u mbagħad aħna żid magħhom

360
00:18:22,130 --> 00:18:23,100
u jirritornaha.

361
00:18:23,100 --> 00:18:26,850
>> Fil JavaScript, funzjonijiet huma attwalment
tip ieħor varjabbli.

362
00:18:26,850 --> 00:18:30,560
Allura aħna biss jgħidu var żid, u
huwa ugwali funzjoni.

363
00:18:30,560 --> 00:18:32,580
A funzjoni li jieħu x u y.

364
00:18:32,580 --> 00:18:33,790
U dak li ma funzjoni tagħmel?

365
00:18:33,790 --> 00:18:39,910
Dan jirritorna x plus y fl-istess eżatt
sintassi bħal fil C. U tinnota li fil-

366
00:18:39,910 --> 00:18:44,290
JavaScript, inti mhux ser ikunu avżati liema l-
funzjoni lura għax peress

367
00:18:44,290 --> 00:18:49,160
varjabbli ma għandekx tipi xorta waħda, huwa
mhuwiex verament produttiv, I raden,

368
00:18:49,160 --> 00:18:52,855
li għandha tispeċifika tiegħek kollha
tipi fil-funzjonijiet tiegħek.

369
00:18:52,855 --> 00:18:55,720

370
00:18:55,720 --> 00:18:59,565
U allura meta inti sejħa funzjoni, huwa
l-istess sintassi eżatt bħal C. You

371
00:18:59,565 --> 00:19:03,610
biss jgħaddu żewġ argumenti tiegħek.

372
00:19:03,610 --> 00:19:07,330
Nixtieq li tipprova dan fil node tiegħi.

373
00:19:07,330 --> 00:19:09,284
Nista 'nibdel l-slide?

374
00:19:09,284 --> 00:19:10,534
>> UDJENZA: [inaudible].

375
00:19:10,534 --> 00:19:14,639

376
00:19:14,639 --> 00:19:17,000
Se irridu jiksbu kopja tad-dijapożitivi?

377
00:19:17,000 --> 00:19:18,250
>> ROGER ZURAWICKI: Iva.

378
00:19:18,250 --> 00:19:28,280

379
00:19:28,280 --> 00:19:29,956
Mela ejja jmorru lura għall node.

380
00:19:29,956 --> 00:19:32,240
OK.

381
00:19:32,240 --> 00:19:38,160
So I ser jgħidu add var ugwali funzjoni.

382
00:19:38,160 --> 00:19:40,650
Teħid ta 'x, tieħu y.

383
00:19:40,650 --> 00:19:43,690
U allura jaf li l-istqarrija tal-
mhux komplut.

384
00:19:43,690 --> 00:19:47,692
Għalhekk fl node jew tiegħek console,
inti ser ikollok avviż dot dot dot.

385
00:19:47,692 --> 00:19:49,660
Allura inti tista 'żżomm ittajpjar kodiċi tiegħek.

386
00:19:49,660 --> 00:19:53,650
U issa jien ser jgħidu y ritorn x plus.

387
00:19:53,650 --> 00:19:54,790
U mbagħad agħlaq il-Brace.

388
00:19:54,790 --> 00:20:00,260
U l-mument I qrib l-Brace, huwa
jara li d-dikjarazzjoni huwa lest.

389
00:20:00,260 --> 00:20:04,730
>> U issa nista 'ngħid żid wieħed u tnejn.

390
00:20:04,730 --> 00:20:08,280
U jien ser nikseb tlieta.

391
00:20:08,280 --> 00:20:11,545
Innota li jekk I biss ma żid, huwa
jgħidlekx me huwa funzjoni.

392
00:20:11,545 --> 00:20:14,630

393
00:20:14,630 --> 00:20:19,570
U ħaġa waħda biss li tingħata attenzjoni għall
hija jekk inti tagħti l-numru ħażin ta '

394
00:20:19,570 --> 00:20:23,380
argumenti, hija ser tagħmel.

395
00:20:23,380 --> 00:20:25,890
Hija sejra ddum, imma int tista 'tikseb
xi riżultati verament stramb.

396
00:20:25,890 --> 00:20:30,070
Tip simili ta 'valur żibel,
inti tista 'taħseb.

397
00:20:30,070 --> 00:20:32,060
Allura jekk jogħġbok aqbad u jippruvaw
dan fil-browsers tiegħek.

398
00:20:32,060 --> 00:21:25,180

399
00:21:25,180 --> 00:21:29,510
>> OK, hekk fl-interess ta 'żmien, I ser
issa ngħaddi biex il-karatteristiċi li jmiss fil-

400
00:21:29,510 --> 00:21:30,760
JavaScript.

401
00:21:30,760 --> 00:21:36,520

402
00:21:36,520 --> 00:21:38,400
Allura konna tkellimna dwar funzjonijiet.

403
00:21:38,400 --> 00:21:40,840
Imxejna tkellem dwar loops,
jekk dikjarazzjonijiet wisq.

404
00:21:40,840 --> 00:21:43,660
Is-sintassi hija l-istess
bħala C u varjabbli.

405
00:21:43,660 --> 00:21:46,090
U issa nixtieq li nitkellmu dwar arrays.

406
00:21:46,090 --> 00:21:48,520
Jien sorry li l-slides
ltqajna daqsxejn maqtugħa.

407
00:21:48,520 --> 00:21:52,470
Imma attwalment, fl-ewwel taqsima,
dak kollu li għandek bżonn se taħdem.

408
00:21:52,470 --> 00:21:55,410
>> Allura għandna tip ieħor għal
varjabbli imsejħa arrays.

409
00:21:55,410 --> 00:21:57,930
U nużaw parentesi kwadri
biex juri lilhom.

410
00:21:57,930 --> 00:22:01,960
Għalhekk fl-ewwel eżempju,
arr var, array vojta.

411
00:22:01,960 --> 00:22:05,900
Din hija l-lista vojta, hekk firxa
fihom ebda elementi.

412
00:22:05,900 --> 00:22:09,770
U inti tista 'wkoll ikollhom firxa
bi tliet kordi.

413
00:22:09,770 --> 00:22:13,290
Fl C, kull element fil-firxa tiegħek
kellha tkun l-istess tip.

414
00:22:13,290 --> 00:22:16,940
>> Iżda minħabba fl JavaScript hemm biss
tip wieħed, arrays jista 'attwalment

415
00:22:16,940 --> 00:22:18,510
għandhom tipi differenti ta 'valuri.

416
00:22:18,510 --> 00:22:22,220
Bħal hawn, għandna firxa ma
float, a bool, u int.

417
00:22:22,220 --> 00:22:25,020

418
00:22:25,020 --> 00:22:28,510
Il-mod ikollok tul ta 'firxa,
inti ma attwalment jkollhom jużaw daqs ta '

419
00:22:28,510 --> 00:22:29,030
jew xejn.

420
00:22:29,030 --> 00:22:31,570
Inti biss jgħidu firxa u
imbagħad dot tul.

421
00:22:31,570 --> 00:22:36,450
U dan dot tul, inti tista 'taħseb
huwa tip simili ta 'Struct, kif kull

422
00:22:36,450 --> 00:22:40,890
firxa għandha kamp, ​​varjabbli extra
ġewwa ta 'dan msejħa tul, li

423
00:22:40,890 --> 00:22:42,910
iżomm rekord ta 'kemm żmien array tiegħek.

424
00:22:42,910 --> 00:22:47,280

425
00:22:47,280 --> 00:22:50,420
>> Hekk jien biss malajr se jmorru fil
glandoli u jurik guys l-istess ħaġa.

426
00:22:50,420 --> 00:22:55,860

427
00:22:55,860 --> 00:22:58,050
So I jista 'jkollhom firxa.

428
00:22:58,050 --> 00:23:00,280
Hija tista 'tkun l-lista vojta.

429
00:23:00,280 --> 00:23:02,030
U se print me
back lista vojta.

430
00:23:02,030 --> 00:23:02,530
Great.

431
00:23:02,530 --> 00:23:08,560
I issa jistgħu jgħidu li l-array
tkun 1, u 2.3, u vera.

432
00:23:08,560 --> 00:23:10,400
Allura tipi differenti kollha.

433
00:23:10,400 --> 00:23:11,740
U tinnota taħdem biss multa.

434
00:23:11,740 --> 00:23:16,330
Il-firxa niġi lura jappoġġja
kollha tal-valuri I tatha.

435
00:23:16,330 --> 00:23:20,440
>> Jekk jien ridt li jiksbu l-ewwel element ta '
il-firxa, il-sintassi huwa attwalment

436
00:23:20,440 --> 00:23:22,980
l-istess bħal fl C. You
tista 'tgħid firxa żero.

437
00:23:22,980 --> 00:23:24,430
U ikollok wieħed.

438
00:23:24,430 --> 00:23:27,920
Nista 'ngħid l-istess għall-firxa
tnejn, u niġi veru.

439
00:23:27,920 --> 00:23:31,610
Jekk nagħmel xi ħaġa barra mill-firxa,
JavaScript huwa lingwa sikur

440
00:23:31,610 --> 00:23:33,390
minħabba I mhux se tikseb tort seg.

441
00:23:33,390 --> 00:23:34,780
I ser tingħata mhux definiti.

442
00:23:34,780 --> 00:23:37,510
>> U dan mhux definit, inti tista 'tip
ta taħseb dwarha bħala null.

443
00:23:37,510 --> 00:23:41,390
Iżda jista 'jkun verament annoying meta inti
kodiċi għaliex inti ser ikollhom jiċċekkjaw li

444
00:23:41,390 --> 00:23:43,880
kważi dak kollu li għandek tagħmel, int
taħdem ma huwa undefined.

445
00:23:43,880 --> 00:23:47,700
U aħna ser tara xi eżempji ta '
dan meta naħdmu fil Meteor.

446
00:23:47,700 --> 00:23:50,600
>> Għalkemm firxa erba mhux definit,
I tista 'tassenja din il-valur.

447
00:23:50,600 --> 00:23:52,570
So I ser jgħidu dan ugwali wieħed.

448
00:23:52,570 --> 00:23:57,050
U mbagħad jekk mmur array, I
jkollhom il-valur żejjed hemmhekk.

449
00:23:57,050 --> 00:24:02,470
U tinnota li array tlieta, li wkoll
kien undefined, soġġorni undefined.

450
00:24:02,470 --> 00:24:05,690
So I issa għandhom firxa ma
toqba fin-nofs.

451
00:24:05,690 --> 00:24:07,750
Imma jekk jien stampata array erba,
I se tikseb wieħed.

452
00:24:07,750 --> 00:24:10,960
Jekk I ma array tlieta, I nikseb mhux definiti.

453
00:24:10,960 --> 00:24:13,880
>> Allura l-karatteristika sbieħ li JavaScript
tippermetti li tagħmel huwa li l-listi jistgħu

454
00:24:13,880 --> 00:24:15,620
tibdil fid-daqs.

455
00:24:15,620 --> 00:24:18,520
Arrays, arrays li huma listi,
dawn jinbidlu daqs.

456
00:24:18,520 --> 00:24:22,480
U inti tista 'tispeċifika kwalunkwe post
ġewwa minnhom.

457
00:24:22,480 --> 00:24:25,370
U l-lakuni se tkun mimlija
ma 'dawn il-valuri mhux definiti.

458
00:24:25,370 --> 00:24:31,560

459
00:24:31,560 --> 00:24:33,450
>> Allura konna tkellimna dwar arrays.

460
00:24:33,450 --> 00:24:37,050
Issa, l-aħħar ħaġa li nixtieq li tkopri fl
JavaScript, u ​​dan huwa importanti ħafna

461
00:24:37,050 --> 00:24:39,550
biex jifhmu l-kodiċi li
Jien ser nuruk,

462
00:24:39,550 --> 00:24:41,530
se tkun l-oġġetti.

463
00:24:41,530 --> 00:24:45,140
U oġġetti huma terminu fil -

464
00:24:45,140 --> 00:24:47,380
bażikament, huma preżenti
ipprogrammar ta 'lingwi ħafna.

465
00:24:47,380 --> 00:24:50,620
U kull lingwa ta 'programmar jħobb
jaħsbu minnhom daqsxejn differenti.

466
00:24:50,620 --> 00:24:55,050
>> Imma naħseb għal Meteor, tajba
analoġija hija l-Struct C.

467
00:24:55,050 --> 00:24:59,410
Fl C, jekk irridu isibu l-Istituzzjonjijiet
student, aħna'd jkollhom jispeċifikaw il-

468
00:24:59,410 --> 00:25:00,240
affarijiet ġewwa ta 'dan.

469
00:25:00,240 --> 00:25:01,440
Għalhekk għandu jkollu isem.

470
00:25:01,440 --> 00:25:02,140
Dan irid ikollha sena.

471
00:25:02,140 --> 00:25:03,650
Għandu jkollhom is-sessi.

472
00:25:03,650 --> 00:25:07,350
Imma irridu wkoll biex jagħtuh l-
tipi ta 'dawk kollha affarijiet.

473
00:25:07,350 --> 00:25:11,200
>> U issa li għandna dan moffa għall-
Struct imsejħa student, li jista 'jkollna

474
00:25:11,200 --> 00:25:14,640
Struct ġdid, u mbagħad nistgħu manwalment
jgħidu liema kull wieħed mill-oqsma huma.

475
00:25:14,640 --> 00:25:17,740
U li fejn nużaw dot isem,
dot sena, dot-sessi.

476
00:25:17,740 --> 00:25:21,930
U allura aħna biss, fl-aħħar linja tal-
kodiċi hawn, jien biss istampar l-

477
00:25:21,930 --> 00:25:24,980
isem tal-istudent Struct.

478
00:25:24,980 --> 00:25:28,220
>> Fid-dinja JavaScript, hemm
ebda ħaġa bħal student Struct.

479
00:25:28,220 --> 00:25:30,660
Inti ma jiġġenerawx struttura predeterminata.

480
00:25:30,660 --> 00:25:34,680
Inti fil-fatt biss, f'dawn parentesi,
inti tgħidli dak li kollox huwa.

481
00:25:34,680 --> 00:25:40,680
U huwa dan notazzjoni stramb mal-
kolon u allura l-virgola, iżda inti ser

482
00:25:40,680 --> 00:25:41,810
jidraw malajr biżżejjed.

483
00:25:41,810 --> 00:25:44,930
>> U huwa attwalment verament faċli,
b'mod flessibbli ta 'ftit

484
00:25:44,930 --> 00:25:47,400
manipulazzjoni oġġetti.

485
00:25:47,400 --> 00:25:51,270
Tinnota li jekk irrid issa jiksbu
isem mill s, I biss tagħmel s.name.

486
00:25:51,270 --> 00:25:54,090

487
00:25:54,090 --> 00:25:56,790
Hemm xi mistoqsijiet dwar dan?

488
00:25:56,790 --> 00:26:00,260
Dan normalment kien konfuża ħafna
suġġett meta aħna jintroduċu nies biex

489
00:26:00,260 --> 00:26:02,280
JavaScript.

490
00:26:02,280 --> 00:26:04,110
I ser tagħmel xi eżempji ta 'dan node.

491
00:26:04,110 --> 00:26:05,010
Iva?

492
00:26:05,010 --> 00:26:06,260
>> UDJENZA: [inaudible].

493
00:26:06,260 --> 00:26:14,130

494
00:26:14,130 --> 00:26:16,230
>> ROGER ZURAWICKI: So do you
jkollhom eżempju, multipli

495
00:26:16,230 --> 00:26:18,764
varjabbli ta 'dak it-tip.

496
00:26:18,764 --> 00:26:20,014
>> UDJENZA: [inaudible].

497
00:26:20,014 --> 00:26:23,540

498
00:26:23,540 --> 00:26:24,790
>> UDJENZA: [inaudible].

499
00:26:24,790 --> 00:26:37,610

500
00:26:37,610 --> 00:26:39,450
>> ROGER ZURAWICKI: OK.

501
00:26:39,450 --> 00:26:43,760
So I raden il-mod inti tmur dwar huwa
inti tpoġġi oġġetti fil-firxa,

502
00:26:43,760 --> 00:26:45,340
u issa int ser ikollhom
firxa ta 'oġġetti.

503
00:26:45,340 --> 00:26:47,547
Does li iwieġeb il-mistoqsija tiegħek?

504
00:26:47,547 --> 00:26:48,797
>> UDJENZA: [inaudible].

505
00:26:48,797 --> 00:26:50,890

506
00:26:50,890 --> 00:26:51,260
>> ROGER ZURAWICKI: Iva.

507
00:26:51,260 --> 00:26:52,430
S huwa oġġett wieħed.

508
00:26:52,430 --> 00:26:57,455
Allura nistgħu mmorru fis node u biss
play madwar ftit.

509
00:26:57,455 --> 00:26:58,705
>> UDJENZA: [inaudible]?

510
00:26:58,705 --> 00:27:04,880

511
00:27:04,880 --> 00:27:05,440
>> ROGER ZURAWICKI: Oh, OK.

512
00:27:05,440 --> 00:27:10,660
Mela jekk inti qed tistaqsi liema klassijiet huma,
klassijiet huma ttrattati b'mod differenti ħafna,

513
00:27:10,660 --> 00:27:14,510
u dawn ikollhom skema verament stramb
imsejħa prototipi, li inti ma

514
00:27:14,510 --> 00:27:15,620
bżonn tkun taf dwar.

515
00:27:15,620 --> 00:27:17,910
M'hemm l-ebda mod fiss biex tagħmel dan.

516
00:27:17,910 --> 00:27:21,160
Mela jekk inti tixtieq li jiġġeneraw multipli, inti
kien biss tip ta 'jkollha funzjoni

517
00:27:21,160 --> 00:27:22,100
jew xi ħaġa.

518
00:27:22,100 --> 00:27:24,340
Inti jiġġeneraw funzjoni tiegħek.

519
00:27:24,340 --> 00:27:26,765
U inti tirritorna oġġett.

520
00:27:26,765 --> 00:27:29,550
Dan ikun l-eħfef
mod kif tagħmel dan.

521
00:27:29,550 --> 00:27:32,454
Does li jagħmel sens?

522
00:27:32,454 --> 00:27:33,704
OK.

523
00:27:33,704 --> 00:27:36,182

524
00:27:36,182 --> 00:27:36,650
Great.

525
00:27:36,650 --> 00:27:39,820
Allura ladarba aħna jkollhom għarfien ta '
JavaScript oġġetti, huma -

526
00:27:39,820 --> 00:27:41,082
oh, iva.

527
00:27:41,082 --> 00:27:42,026
>> UDJENZA: [inaudible]

528
00:27:42,026 --> 00:27:45,802
eżempju, x'inhu l-differenza bejn
"Roger" kwotazzjonijiet doppja kontra

529
00:27:45,802 --> 00:27:47,510
[Inaudible] ma kwotazzjonijiet uniku.

530
00:27:47,510 --> 00:27:47,810
>> ROGER ZURAWICKI: OK.

531
00:27:47,810 --> 00:27:52,730
Allura dan huwa C, aħna għandna l-uniku
kwotazzjonijiet jirrappreżentaw Chars, u double

532
00:27:52,730 --> 00:27:54,550
kwotazzjonijiet jirrappreżentaw kordi.

533
00:27:54,550 --> 00:27:57,920
JavaScript attwalment throws dan bogħod
għaliex inti jista 'jkollhom kordi ma

534
00:27:57,920 --> 00:28:01,570
kwotazzjonijiet wieħed jew doppju, u hemm
ebda ħaġa bħal char waħda.

535
00:28:01,570 --> 00:28:04,400
Imma jekk inti biss kkupjati-istess
Kodiċi C, JavaScript kieku

536
00:28:04,400 --> 00:28:05,610
jittrattawha biss multa.

537
00:28:05,610 --> 00:28:07,710
Liema hu għaliex I trattata bħala -

538
00:28:07,710 --> 00:28:12,540
hu għalhekk li I jistgħu litteralment port
il-kodiċi f'dan is-sens.

539
00:28:12,540 --> 00:28:15,420
>> U nixtieq nuruk eżempju
ta 'oġġett aktar ikkumplikat.

540
00:28:15,420 --> 00:28:19,890
Allura inti tista 'tinnota li oġġett wieħed
jista 'jkollhom kordi bħala valuri.

541
00:28:19,890 --> 00:28:21,530
Huwa jista 'jkollhom lista oħra ta' valuri.

542
00:28:21,530 --> 00:28:23,820
Dan jista 'jkollhom lista ta'
oġġetti bħala valuri.

543
00:28:23,820 --> 00:28:25,870
Hemm verament ebda limitu għal dan.

544
00:28:25,870 --> 00:28:29,070
So here, huwa biss dimostrazzjoni tajba
ta 'kif tista' tikseb lott

545
00:28:29,070 --> 00:28:33,290
tipi differenti għaddejjin
kollha oġġett wieħed.

546
00:28:33,290 --> 00:28:34,540
Ma dan jagħmel sens?

547
00:28:34,540 --> 00:28:41,090

548
00:28:41,090 --> 00:28:44,700
>> Issa, inti jista 'jkollhom ukoll
arrays ta 'oġġetti.

549
00:28:44,700 --> 00:28:48,530
U hawn huwa tip ta 'simili għal dak li
staqsa, jekk inti jista 'jkollhom oġġetti ta'

550
00:28:48,530 --> 00:28:49,190
l-istess tip.

551
00:28:49,190 --> 00:28:52,960
Iżda l-problema hija, m'hemm l-ebda fiss
format għall-oġġetti fl JavaScript.

552
00:28:52,960 --> 00:28:55,020
Allura għandek tispeċifika yourself.

553
00:28:55,020 --> 00:28:57,600
U inti għandek tagħmel ċert
li dawn qed uniformi.

554
00:28:57,600 --> 00:29:00,410
Allura hawnhekk, meta I toħloq oġġett, I jkollhom
biex tiżgura li kull waħda minnhom għandha

555
00:29:00,410 --> 00:29:01,910
isem, u kull waħda għandha dar.

556
00:29:01,910 --> 00:29:05,620
>> U mbagħad I jkollhom firxa ta 'dawn,
u li jistgħu jiġu cottage tiegħi.

557
00:29:05,620 --> 00:29:08,290
U allura hawnhekk inti tista 'tip ta'
tara l-għall-loop għaddej.

558
00:29:08,290 --> 00:29:14,090
Il għas loop tkun biss verament komuni
mod biex travers fuq firxa

559
00:29:14,090 --> 00:29:15,150
fl JavaScript.

560
00:29:15,150 --> 00:29:18,010
Avviż li dan il-mudell huwa simili ħafna
għall-ekwivalenti C, fejn inti

561
00:29:18,010 --> 00:29:21,470
ikollhom int i ugwali żero. i
huwa inqas mit-tul.

562
00:29:21,470 --> 00:29:23,634
U mbagħad i plus plus.

563
00:29:23,634 --> 00:29:26,035
>> Huwa kważi l-istess kodiċi,
ħlief għal ftit dettalji.

564
00:29:26,035 --> 00:29:29,460

565
00:29:29,460 --> 00:29:33,120
Allura ma kulħadd jifhem
dak l-oġġett huwa?

566
00:29:33,120 --> 00:29:35,820
Aħsbu ftit dwar dan bħala Struct C.

567
00:29:35,820 --> 00:29:38,784
U l-mod inti aċċess l-oqsma
huwa biss mal-dot.

568
00:29:38,784 --> 00:29:41,950
U sakemm inti tiftakar kif
jużaw il-dot, inti ser tkun multa.

569
00:29:41,950 --> 00:29:55,300

570
00:29:55,300 --> 00:29:58,790
>> OK, hekk issa tista kulħadd
taqra din ir-rabta?

571
00:29:58,790 --> 00:30:02,220
Dan huwa l-link għall-proġett.

572
00:30:02,220 --> 00:30:04,950
Huwa kwalunkwe persuna trouble wara
jaraw l-link?

573
00:30:04,950 --> 00:30:06,251
OK, ejja bidla imbagħad.

574
00:30:06,251 --> 00:30:14,430

575
00:30:14,430 --> 00:30:15,680
Mhuwiex -

576
00:30:15,680 --> 00:30:21,900

577
00:30:21,900 --> 00:30:24,240
Yeah, dan huwa probabbilment l-
eħfef mod biex tagħmel dan.

578
00:30:24,240 --> 00:30:32,390

579
00:30:32,390 --> 00:30:34,560
Great.

580
00:30:34,560 --> 00:30:38,270
>> Mela jekk inti tmur biex dan is-sit, għandu jkun hemm
tkun xi struzzjonijiet li jien ser

581
00:30:38,270 --> 00:30:42,550
jmorru fuq dwar kif nistgħu jinstallaw Meteor
u jiksbu proġett kampjun running tagħna.

582
00:30:42,550 --> 00:30:47,900

583
00:30:47,900 --> 00:30:50,180
I tixtieq tagħmel żgur li kulħadd għandu
il-link stabbiliti qabel I jiċċaqalqu.

584
00:30:50,180 --> 00:31:16,250

585
00:31:16,250 --> 00:31:17,500
Nista jimxu fuq?

586
00:31:17,500 --> 00:31:20,683

587
00:31:20,683 --> 00:31:23,680
OK, kbir.

588
00:31:23,680 --> 00:31:25,890
>> So here I am fuq il-websajt.

589
00:31:25,890 --> 00:31:28,740
Int ser ikollok avviż fil-fajl README,
aħna għandna xi struzzjonijiet dwar kif

590
00:31:28,740 --> 00:31:30,200
biex tikseb th jitwaqqaf.

591
00:31:30,200 --> 00:31:33,920
Inti jeħtieġ li tkun jew fil-CS50
appliance jew biss fuq Mac.

592
00:31:33,920 --> 00:31:35,330
Windows mhux se taħdem.

593
00:31:35,330 --> 00:31:37,760
Imma bażikament xi ħaġa li mhux
Windows għandha taħdem ma 'dawn

594
00:31:37,760 --> 00:31:39,820
struzzjonijiet biss multa.

595
00:31:39,820 --> 00:31:41,470
Imma I jista 'jagħmilha daqsxejn
akbar ukoll.

596
00:31:41,470 --> 00:31:45,610

597
00:31:45,610 --> 00:31:48,820
>> Allura inti ser tmexxi l-ewwel
par ta 'jikkmanda.

598
00:31:48,820 --> 00:31:50,450
Dawn guys se biss tinstalla Meteor.

599
00:31:50,450 --> 00:31:54,870

600
00:31:54,870 --> 00:31:58,530
I tista 'tmur fil terminal tiegħi.

601
00:31:58,530 --> 00:32:02,710
U jekk I run-istess ħaġa issa,
I diġà installat.

602
00:32:02,710 --> 00:32:03,710
Allura huwa daqsxejn iqsar.

603
00:32:03,710 --> 00:32:05,155
Huwa jista 'jieħu ftit itwal
għalik guys.

604
00:32:05,155 --> 00:32:08,160

605
00:32:08,160 --> 00:32:13,530
Imma nixtieq li l-ewwel jagħmlu ċert
li għandna Meteor running.

606
00:32:13,530 --> 00:32:16,780
Wara Meteor ikun installa, għandek
tkun kapaċi tikseb node fil-console.

607
00:32:16,780 --> 00:32:19,430
>> UDJENZA: Huma qed tistaqsi
għal password.

608
00:32:19,430 --> 00:32:22,110
>> ROGER ZURAWICKI: Dan ikun tiegħek
password utent, jekk int fuq Mac.

609
00:32:22,110 --> 00:32:27,030
Hija biss jeħtieġ permess biex
timmodifika xi sistema fajls.

610
00:32:27,030 --> 00:32:30,690
Għalhekk il-kwistjoni kienet, jekk inti titlob għal
password, huwa biss inti titlob

611
00:32:30,690 --> 00:32:33,510
għall password username tiegħek meta
inti log fis Mac tiegħek.

612
00:32:33,510 --> 00:32:35,770
U dan huwa sabiex inti tista '
bidla sistema fajls.

613
00:32:35,770 --> 00:32:46,670

614
00:32:46,670 --> 00:32:51,260
>> U meta int lest, inti tista 'timxi fuq
għall-pass li jmiss, li se kopja l-

615
00:32:51,260 --> 00:32:54,220
kodiċi tal-kampjun I jkollhom mill-websajt.

616
00:32:54,220 --> 00:32:58,330
U int ser tingħata direttorju ġdid fil tiegħek
direttorju dar imsejħa leaderboard, u

617
00:32:58,330 --> 00:32:59,670
nistgħu tibda taħdem minn hemm.

618
00:32:59,670 --> 00:33:09,680

619
00:33:09,680 --> 00:33:14,620
Hekk jien biss ikkupjar u pasta dawn
jikkmanda fis terminal tiegħi.

620
00:33:14,620 --> 00:33:16,780
U għalija, I diġà kklonati dan.

621
00:33:16,780 --> 00:33:21,470
So I tista 'biss issa jimxu
fis leaderboard.

622
00:33:21,470 --> 00:33:23,450
U I għandu jkollhom ftit
fajls fil hemmhekk.

623
00:33:23,450 --> 00:33:29,880

624
00:33:29,880 --> 00:33:31,113
Kwalunkwe mistoqsijiet?

625
00:33:31,113 --> 00:33:34,430
>> UDJENZA: [inaudible] ma tkunx qed taħdem.

626
00:33:34,430 --> 00:33:36,741
>> ROGER ZURAWICKI: Oh, inti tista '
bżonn git installat ukoll.

627
00:33:36,741 --> 00:33:39,150
>> UDJENZA: [inaudible].

628
00:33:39,150 --> 00:33:40,162
>> ROGER ZURAWICKI: Jiddispjacini?

629
00:33:40,162 --> 00:33:41,412
>> UDJENZA: [inaudible].

630
00:33:41,412 --> 00:33:44,500

631
00:33:44,500 --> 00:33:47,390
>> ROGER ZURAWICKI: Oh, OK.

632
00:33:47,390 --> 00:33:47,720
OK.

633
00:33:47,720 --> 00:33:52,860
Dak għax jista 'jkollok bżonn li tkun
illoggjat għal GitHub tikseb din ir-rabta.

634
00:33:52,860 --> 00:33:58,160
Jekk inti guys jista 'jara li, l-eħfef
mod kif tagħmel dan I mbagħad ngħid huwa

635
00:33:58,160 --> 00:33:59,270
tniżżel il-zip.

636
00:33:59,270 --> 00:34:02,010
U dan se biss tniżżel
il-fajls kollha.

637
00:34:02,010 --> 00:34:05,510
U allura ladarba inti tpoġġi fil tiegħek
tniżżel jew direttorju dar tiegħek -

638
00:34:05,510 --> 00:34:07,360
I jirrakkomandaw tqegħid fil tiegħek
direttorju dar hekk aħna kollha jistgħu

639
00:34:07,360 --> 00:34:09,210
run jikkmanda l-istess.

640
00:34:09,210 --> 00:34:15,230
Sakemm aħna għandna l-fajls, aħna se
tkun tista 'tibda taħdem magħhom.

641
00:34:15,230 --> 00:34:17,969
Let me know jekk in-nies qed ikollhom
inkwiet tniżżil l-fajls.

642
00:34:17,969 --> 00:34:21,040
>> UDJENZA: Billi dar direttorju,
inti tfisser -

643
00:34:21,040 --> 00:34:24,989
>> ROGER ZURAWICKI: Allura direttorju home kieku
jkun John Harvard, jekk inti fil-

644
00:34:24,989 --> 00:34:27,460
l-appliance CS50.

645
00:34:27,460 --> 00:34:33,651
Biex tikseb direttorju dar tiegħek,
biss tip C.

646
00:34:33,651 --> 00:34:34,145
>> UDJENZA: [inaudible]

647
00:34:34,145 --> 00:34:37,610
CS50 appliance [inaudible].

648
00:34:37,610 --> 00:34:38,650
>> ROGER ZURAWICKI: Iva.

649
00:34:38,650 --> 00:34:40,480
Inti tixtieq li tmexxi l-kmandi
fil terminal tiegħek.

650
00:34:40,480 --> 00:34:44,899

651
00:34:44,899 --> 00:34:45,390
>> UDJENZA: [inaudible].

652
00:34:45,390 --> 00:34:50,800
I ltqajna żball li tgħid l-ebda
tali file jew direttorju.

653
00:34:50,800 --> 00:34:52,739
>> ROGER ZURAWICKI: Aħna tista 'tieħu quick
break u biss tagħmel ċert li

654
00:34:52,739 --> 00:34:56,760
kulħadd għandu Meteor installat, u jien ser
biss jmorru jippruvaw jgħinu lin-nies.

655
00:34:56,760 --> 00:34:59,130
Jekk jogħġbok erġa biex jgħinu lil xulxin jekk
int taħdem fis-problemi.

656
00:34:59,130 --> 00:35:04,640

657
00:35:04,640 --> 00:35:05,580
Jiddispjacini, yeah.

658
00:35:05,580 --> 00:35:08,930
Inti kemm fl-appliance?

659
00:35:08,930 --> 00:35:09,350
>> UDJENZA: Yeah.

660
00:35:09,350 --> 00:35:13,190
Għandi l-RISA

661
00:35:13,190 --> 00:35:14,300
>> ROGER ZURAWICKI: OK.

662
00:35:14,300 --> 00:35:20,740
Jekk inti tmur lura għall-websajt,
mur iscroll sal-quċċata.

663
00:35:20,740 --> 00:35:23,580
U hemm dan HTTPS.

664
00:35:23,580 --> 00:35:25,810
>> UDJENZA: Kopja dan?

665
00:35:25,810 --> 00:35:26,230
>> ROGER ZURAWICKI: Yeah.

666
00:35:26,230 --> 00:35:28,950
U allura inti tixtieq li
tip fil klonu git.

667
00:35:28,950 --> 00:35:30,814
Mela jekk inti istampa Kontroll A -

668
00:35:30,814 --> 00:35:33,718
>> UDJENZA: Hawnhekk?

669
00:35:33,718 --> 00:35:36,410
U ma [inaudible]?

670
00:35:36,410 --> 00:35:37,307
>> ROGER ZURAWICKI: G-I-T.

671
00:35:37,307 --> 00:35:38,557
>> UDJENZA: [inaudible].

672
00:35:38,557 --> 00:35:40,410

673
00:35:40,410 --> 00:35:42,670
>> ROGER ZURAWICKI: Git u mbagħad klonu.

674
00:35:42,670 --> 00:35:46,610
Allura huwa simili ħafna għall-kmand inti
kellhom fuq, iżda l-URL inbidlet.

675
00:35:46,610 --> 00:35:49,010
Għalhekk qabel ma kien dan, issa huwa dan.

676
00:35:49,010 --> 00:35:50,680
Let me taġġorna l -

677
00:35:50,680 --> 00:35:51,354
yeah.

678
00:35:51,354 --> 00:35:52,604
>> UDJENZA: [inaudible].

679
00:35:52,604 --> 00:35:56,000

680
00:35:56,000 --> 00:35:58,076
>> ROGER ZURAWICKI: Dan huwa jitniżżel.

681
00:35:58,076 --> 00:35:59,326
>> UDJENZA: [inaudible].

682
00:35:59,326 --> 00:36:02,930

683
00:36:02,930 --> 00:36:05,690
>> ROGER ZURAWICKI: Oh, u għalhekk
ma klonu korrett.

684
00:36:05,690 --> 00:36:07,920
I se jiffissaw dak.

685
00:36:07,920 --> 00:36:10,190
Hemm żball ma tipprova
li tniżżel il-fajls.

686
00:36:10,190 --> 00:36:13,820
Let me taġġorna l-kmand għalik guys
so I jistgħu jagħmlu ċert li se taħdem.

687
00:36:13,820 --> 00:36:17,025
Jien sorry dwar dan.

688
00:36:17,025 --> 00:36:21,618
Għandu jkun l-istess għal
MACs jew appliance CS50.

689
00:36:21,618 --> 00:36:22,868
>> UDJENZA: [inaudible].

690
00:36:22,868 --> 00:36:49,320

691
00:36:49,320 --> 00:36:51,190
>> ROGER ZURAWICKI: stajt aġġornati l-
kmand għal numru tnejn, jekk

692
00:36:51,190 --> 00:36:52,910
inti jġedded il-paġna.

693
00:36:52,910 --> 00:36:56,520
U ma 'dan, URL, inti għandek tkun
kapaċi li tniżżel il-fajls.

694
00:36:56,520 --> 00:37:00,162

695
00:37:00,162 --> 00:37:02,550
>> UDJENZA: Allura jekk aħna qed għadhom
tniżżil [inaudible].

696
00:37:02,550 --> 00:37:05,930
>> ROGER ZURAWICKI: Jekk int
xorta tniżżil Meteor?

697
00:37:05,930 --> 00:37:07,180
>> UDJENZA: [inaudible].

698
00:37:07,180 --> 00:37:09,860

699
00:37:09,860 --> 00:37:11,910
>> ROGER ZURAWICKI: Iva, jekk inti tixtieq
biex jiżviluppaw fuq Mac tiegħek.

700
00:37:11,910 --> 00:37:14,145
Iżda inti għandek bżonn l-iżviluppatur Xcode
għodod installati.

701
00:37:14,145 --> 00:37:21,530

702
00:37:21,530 --> 00:37:24,550
Stajt ttestjati dawn il-kmandijiet fuq il-CS50
appliance, so I jistgħu jiggarantixxu

703
00:37:24,550 --> 00:37:25,440
li ser jaħdem.

704
00:37:25,440 --> 00:37:26,710
Iva. let me go u jgħinek.

705
00:37:26,710 --> 00:37:30,558

706
00:37:30,558 --> 00:37:31,808
>> UDJENZA: [inaudible].

707
00:37:31,808 --> 00:37:39,440

708
00:37:39,440 --> 00:37:40,372
I jagħtu password tiegħi.

709
00:37:40,372 --> 00:37:42,240
Dan huwa Mac.

710
00:37:42,240 --> 00:37:43,490
U mbagħad I do [inaudible].

711
00:37:43,490 --> 00:37:51,114

712
00:37:51,114 --> 00:37:52,580
>> ROGER ZURAWICKI: OK.

713
00:37:52,580 --> 00:37:57,080
I se jipprova jmexxu l-kmandi
biss fil-terminal appliance CS50.

714
00:37:57,080 --> 00:37:58,330
>> UDJENZA: [inaudible].

715
00:37:58,330 --> 00:38:00,220

716
00:38:00,220 --> 00:38:02,570
>> ROGER ZURAWICKI: Nixtieq ġġibu taħdem
ewwel fuq il terminal, fuq il-

717
00:38:02,570 --> 00:38:04,830
Appliance CS50, u mbagħad
-terminal Mac.

718
00:38:04,830 --> 00:38:08,130
>> UDJENZA: Mela jekk inti tagħmel dan fuq il-CS50
appliance bħal dik, [inaudible].

719
00:38:08,130 --> 00:38:13,650

720
00:38:13,650 --> 00:38:15,850
>> ROGER ZURAWICKI: Nixtieq li jiċċaqalqu
fuq, imma jekk in-nies għadhom jkollhom

721
00:38:15,850 --> 00:38:20,190
trouble twaqqif Meteor, Kevin huwa aktar
minn kuntenti li jgħinuk guys out,

722
00:38:20,190 --> 00:38:21,440
Kevin fil-shirt griż.

723
00:38:21,440 --> 00:38:26,320

724
00:38:26,320 --> 00:38:32,170
Dak li għandu jkollna hija aħna qed tmur biex
imexxu l-aħħar kmand, numru tlieta, fi

725
00:38:32,170 --> 00:38:33,710
terminal tagħna.

726
00:38:33,710 --> 00:38:37,320
Meta nagħmlu dan, aħna ser run Meteor.

727
00:38:37,320 --> 00:38:39,040
>> U suppost -

728
00:38:39,040 --> 00:38:41,200
oh, I diġà għandhom Meteor running.

729
00:38:41,200 --> 00:38:45,230
Għalhekk mhux se let - let me
biss mill-qrib Meteor ieħor tiegħi.

730
00:38:45,230 --> 00:38:49,640
Meta I run Meteor, inti
issa tara li -

731
00:38:49,640 --> 00:38:51,490
inti għandek tara l-direttorju kurrenti
li huwa li jservu.

732
00:38:51,490 --> 00:38:55,476
U issa huwa se ngħid-server
tkun qed taħdem fuq http://localhost.

733
00:38:55,476 --> 00:38:58,860
Dik hija l-URL inti tixtieq li tqiegħed
fil fil-web browser tiegħek.

734
00:38:58,860 --> 00:39:05,410
>> U fuq dik URL, inti għandek tkun tista '
aċċess għal leaderboard ftit sbieħ.

735
00:39:05,410 --> 00:39:10,030

736
00:39:10,030 --> 00:39:14,530
Allura avviż li dan huwa fuq localhost,
li jfisser li jekk inti tagħmel xi

737
00:39:14,530 --> 00:39:17,320
bidliet, int mhux ser
tara bidliet ta 'xulxin.

738
00:39:17,320 --> 00:39:20,830
Billi fuq il-websajt I wera inti
fil-bidu, nistgħu jiksbu

739
00:39:20,830 --> 00:39:23,380
bidliet kulħadd għaliex kulħadd
kienet aċċess għall-istess websajt.

740
00:39:23,380 --> 00:39:27,010

741
00:39:27,010 --> 00:39:29,540
>> So let me biss mur [? kelma?]

742
00:39:29,540 --> 00:39:35,570
3,000.

743
00:39:35,570 --> 00:39:38,820
Allura inti għandek tkun tista 'tikkonferma biss
li l-funzjonalità jaħdem.

744
00:39:38,820 --> 00:39:44,790
Tista 'tagħżel nies differenti, u
inti tista 'tagħtihom punti differenti.

745
00:39:44,790 --> 00:39:46,710
So I jagħtu punti 'xi ħadd.

746
00:39:46,710 --> 00:39:50,420
Tista 'wkoll tara li
dawn lok fir-rank.

747
00:39:50,420 --> 00:39:53,450

748
00:39:53,450 --> 00:39:57,360
>> Issa, fl-interess ta 'żmien, hemm
huma tliet karatteristiċi li stajt

749
00:39:57,360 --> 00:39:58,020
implimentati.

750
00:39:58,020 --> 00:40:03,760
U aħna qed tmur biex jimplimentaw tħassir
utenti bħala l-ewwel karatteristika tagħna.

751
00:40:03,760 --> 00:40:06,360
Iżda qabel nimxu fuq, huma
Hemm xi mistoqsijiet?

752
00:40:06,360 --> 00:40:09,010
Kellek f'idejk up.

753
00:40:09,010 --> 00:40:10,480
Iva?

754
00:40:10,480 --> 00:40:11,730
>> UDJENZA: [inaudible].

755
00:40:11,730 --> 00:40:20,980

756
00:40:20,980 --> 00:40:22,450
>> ROGER ZURAWICKI: Tista 'tiċċekkja
li Meteor huwa installat?

757
00:40:22,450 --> 00:40:25,160

758
00:40:25,160 --> 00:40:26,410
>> UDJENZA: [inaudible].

759
00:40:26,410 --> 00:40:31,440

760
00:40:31,440 --> 00:40:32,680
>> ROGER ZURAWICKI: ospitanti Lokali 3,000?

761
00:40:32,680 --> 00:40:36,550
U int fl-appliance CS50?

762
00:40:36,550 --> 00:40:37,800
I tista 'tagħmel -

763
00:40:37,800 --> 00:40:39,870

764
00:40:39,870 --> 00:40:41,210
inti ma għandekx li jkun fuq Mac.

765
00:40:41,210 --> 00:40:43,558
Dan se taħdem fl-appliance.

766
00:40:43,558 --> 00:40:45,880
>> UDJENZA: [inaudible].

767
00:40:45,880 --> 00:40:47,520
>> ROGER ZURAWICKI: Fil-normal
web browser, yeah.

768
00:40:47,520 --> 00:40:49,170
>> UDJENZA: [inaudible].

769
00:40:49,170 --> 00:40:52,100
>> ROGER ZURAWICKI: Huwa Meteor running?

770
00:40:52,100 --> 00:40:54,180
Allura OK, hemm distinzjoni hawnhekk.

771
00:40:54,180 --> 00:40:56,300
Jekk int taħdem fil-
appliance, għandek tagħmel

772
00:40:56,300 --> 00:40:58,400
localhost fi ħdan l-appliance.

773
00:40:58,400 --> 00:41:00,860
Jekk int taħdem fil Mac tiegħek,
bħal I am, imbagħad I tista 'tagħmel

774
00:41:00,860 --> 00:41:02,460
Mac tiegħi Google Chrome.

775
00:41:02,460 --> 00:41:05,520
Imma jekk inti qed tuża l-appliance CS50,
għandek tagħmel dak kollu

776
00:41:05,520 --> 00:41:06,350
fl-appliance.

777
00:41:06,350 --> 00:41:09,022
Allura inti għandek tuża Google
Chrome fl-appliance.

778
00:41:09,022 --> 00:41:10,350
>> UDJENZA: [inaudible].

779
00:41:10,350 --> 00:41:12,188
>> ROGER ZURAWICKI: Huwa
għadu ma tkunx qed taħdem?

780
00:41:12,188 --> 00:41:13,438
>> UDJENZA: [inaudible].

781
00:41:13,438 --> 00:41:39,170

782
00:41:39,170 --> 00:41:42,390
>> ROGER ZURAWICKI: Hekk biss jirrepetu,
kif taħseb aċċess għall-websajt issa.

783
00:41:42,390 --> 00:41:46,380
Għandek URL hawn fuq
localhost 3,000.

784
00:41:46,380 --> 00:41:49,600
Jekk int fl-appliance CS50,
ikollok tiftaħ CS50

785
00:41:49,600 --> 00:41:51,320
Google Chrome appliance.

786
00:41:51,320 --> 00:41:54,850
U f'dak Chrome Google fil-
appliance, inti tista 'tip li URL,

787
00:41:54,850 --> 00:41:56,400
u inti għandek tara leaderboard.

788
00:41:56,400 --> 00:41:58,990

789
00:41:58,990 --> 00:42:04,800
Hekk jien ser biss jitqiegħed off
għall-ġenb hawn ftit.

790
00:42:04,800 --> 00:42:09,600
U issa jien ser tiftaħ tiegħi
editur test hawn fuq.

791
00:42:09,600 --> 00:42:16,040
So let me biss tagħmel ċert li
il-kodiċi hija fl-ordni.

792
00:42:16,040 --> 00:42:17,580
OK.

793
00:42:17,580 --> 00:42:19,750
Great.

794
00:42:19,750 --> 00:42:22,360
>> Nixtieq li issa jimxu permezz
il-kodiċi daqsxejn.

795
00:42:22,360 --> 00:42:26,110
U l-ewwel fajl I tixtieq tibda
mal jiġifieri leaderboard.html.

796
00:42:26,110 --> 00:42:31,520
Int ser tkun kapaċi tikseb dan il-kodiċi wara
is-seminar, so I biss jixtiequ juru

797
00:42:31,520 --> 00:42:33,960
inti fuq il-kompjuter tiegħi x'inhu għaddej.

798
00:42:33,960 --> 00:42:39,130

799
00:42:39,130 --> 00:42:40,970
So I hope kulħadd jista 'jara dan.

800
00:42:40,970 --> 00:42:47,970

801
00:42:47,970 --> 00:42:51,590
Allura fil-bidu nett tal-fajl, aħna
ikollhom ras tagħna u t-titolu, li

802
00:42:51,590 --> 00:42:54,510
huwa simili għal dak li rajna
f'kull dokument HTML.

803
00:42:54,510 --> 00:42:56,990
U allura aħna qed tmur biex ikollhom
l-tikketta ġisem hawn.

804
00:42:56,990 --> 00:42:59,920
>> What I ħadthom magħżula hija l-prinċipali
ġisem, bażikament x'hemm

805
00:42:59,920 --> 00:43:01,470
se tikseb murija.

806
00:43:01,470 --> 00:43:05,560
Iżda hemm xi nuqqas ta 'HTML ġdida
affarijiet, u li fil-

807
00:43:05,560 --> 00:43:06,710
parentesi angolu doppja.

808
00:43:06,710 --> 00:43:08,600
U dawn huma tags template.

809
00:43:08,600 --> 00:43:13,770
Allura inti taf tara hawn dan bracket
leaderboard ġdid bracket.

810
00:43:13,770 --> 00:43:17,390
U dan huwa tip ta '- jaħsbu li
bħala sejħa funzjoni għall-HTML.

811
00:43:17,390 --> 00:43:19,320
>> Din hija verżjoni speċjali tal HTML.

812
00:43:19,320 --> 00:43:22,730
Hu l-verżjoni li Meteor użi, li
huwa għaliex inti tista display differenti

813
00:43:22,730 --> 00:43:26,190
affarijiet, bħall-leaderboard
ismijiet u buttuni.

814
00:43:26,190 --> 00:43:30,870
Imma leaderboard jgħidlek biex tmur fil-
template bl-isem leaderboard.

815
00:43:30,870 --> 00:43:34,746
Allura template ma jiksbu murija minn
innifsu, iżda huwa funzjoni, u għalhekk

816
00:43:34,746 --> 00:43:35,390
se tikseb imsejħa.

817
00:43:35,390 --> 00:43:41,030
U inti ser tissostitwixxi kollha ta 'dan
Kodiċi dritt hawn fis leaderboard.

818
00:43:41,030 --> 00:43:44,510

819
00:43:44,510 --> 00:43:48,820
>> Il-parti interessanti ta leaderboard
hawnhekk hija biss din it-tabella.

820
00:43:48,820 --> 00:43:52,910
Jekk inti biss taqraha, aqra dan il-kodiċi
out loud, għandu jkun intuwittivi

821
00:43:52,910 --> 00:43:57,390
minħabba leaderboard, kollox aħna
hawnhekk huwa tabella.

822
00:43:57,390 --> 00:44:00,410
Din ID klassi Jittieħed inti ma
bżonn ninkwetaw dwar.

823
00:44:00,410 --> 00:44:02,460
Just jafu li hemm header tabella.

824
00:44:02,460 --> 00:44:03,630
Li dan thead.

825
00:44:03,630 --> 00:44:06,860
>> U isib isem u punteġġ.

826
00:44:06,860 --> 00:44:12,150
Kollha dawn it-tags, bħal thtable, thead,
tkun taf biss jitgħallmu kif tmur flimkien.

827
00:44:12,150 --> 00:44:15,540
Mhuwiex importanti li inti memorize
dawn għaliex inti tista 'biss aċċess għal kull

828
00:44:15,540 --> 00:44:16,520
referenza online.

829
00:44:16,520 --> 00:44:20,610
Jew mill-aħħar tas-semestru, dawn
se jkun biss familjari ħafna miegħek.

830
00:44:20,610 --> 00:44:22,840
>> Wara l-header tal-mejda, l-
parti li nixtieq li tiġbed tiegħek

831
00:44:22,840 --> 00:44:24,900
attenzjoni għal dan huwa h tag.

832
00:44:24,900 --> 00:44:27,180
Għaliex dan huwa fil-parentesi doppja,
huwa template.

833
00:44:27,180 --> 00:44:30,980
Allura dan ifisser għal kull wieħed mill-atturi,
tkun xi players hija, irridu

834
00:44:30,980 --> 00:44:31,500
wiri.

835
00:44:31,500 --> 00:44:32,965
U immorru l-template player.

836
00:44:32,965 --> 00:44:35,680

837
00:44:35,680 --> 00:44:39,890
>> Jekk aħna iscroll down ftit aktar -

838
00:44:39,890 --> 00:44:40,980
Nispera li kulħadd jista 'jara dak.

839
00:44:40,980 --> 00:44:42,900
Għandna l-template player.

840
00:44:42,900 --> 00:44:49,080
U dan template bażikament jiddefinixxi
ċellula tabella, fejn inti tpoġġi fl-isem

841
00:44:49,080 --> 00:44:50,330
hawn u l-punteġġ.

842
00:44:50,330 --> 00:44:52,540

843
00:44:52,540 --> 00:44:56,720
Zooming out issa, nistgħu naraw
li din blokki ta 'kodiċi -

844
00:44:56,720 --> 00:44:59,060
u li kien player tagħna hemm isfel -

845
00:44:59,060 --> 00:45:01,070
jiddefinixxi waħda minn dawn iċ-ċelluli.

846
00:45:01,070 --> 00:45:02,890
Kull ħaġa li ikklikkja I
isir isfar.

847
00:45:02,890 --> 00:45:06,690

848
00:45:06,690 --> 00:45:08,660
>> A mod sempliċi I tista 'tinbidel issa.

849
00:45:08,660 --> 00:45:10,150
Kun żgur Meteor ikun għadu għaddej.

850
00:45:10,150 --> 00:45:12,540
Meteor għandha tkun proċess server,
sabiex inti sempliċement inħallu

851
00:45:12,540 --> 00:45:14,020
taħdem meta inti żviluppati.

852
00:45:14,020 --> 00:45:18,280
Ejja ngħidu I riedu bidla
l-ismijiet jew il-punteġġ.

853
00:45:18,280 --> 00:45:23,320
U jien ngħid jien ser
li jżidu punti hawn.

854
00:45:23,320 --> 00:45:27,215
Allura l-bidla I magħmula hawn kien,
minflok sempliċiment punteġġ, I

855
00:45:27,215 --> 00:45:30,280
żid il-punti ispazju mirbuħa.

856
00:45:30,280 --> 00:45:32,775
>> Jien ser zoom out, u jien
ser jiffranka fajl tiegħi.

857
00:45:32,775 --> 00:45:35,510

858
00:45:35,510 --> 00:45:39,830
U wara I ħlief fajl tiegħi, I bżonn
tagħmel żgur Meteor qed taħdem.

859
00:45:39,830 --> 00:45:55,650

860
00:45:55,650 --> 00:45:57,610
Jiddispjacini dwar dan.

861
00:45:57,610 --> 00:46:00,330
I nuruk edits
saru fil-ħin reali.

862
00:46:00,330 --> 00:46:06,180
So I ser biss bidla xi test.

863
00:46:06,180 --> 00:46:07,600
Ikklikkja player.

864
00:46:07,600 --> 00:46:10,040
Jien tqegħid fil-caps.

865
00:46:10,040 --> 00:46:14,540
U għandu jkun li jekk din qed taħdem
kif suppost, meta I ħlief, hija

866
00:46:14,540 --> 00:46:16,801
jaġġorna.

867
00:46:16,801 --> 00:46:20,420
>> Oh, I think dritt issa l-problema hija
M'inix fid-direttorju dritt.

868
00:46:20,420 --> 00:46:24,940

869
00:46:24,940 --> 00:46:26,870
OK.

870
00:46:26,870 --> 00:46:28,160
Jien sorry dwar dan.

871
00:46:28,160 --> 00:46:32,860
Allura hawnhekk, dak li l-avviż huwa
bidla tiegħi marru permezz.

872
00:46:32,860 --> 00:46:34,540
Issa ngħid nixtieq li jerġa 'lura l-bidla.

873
00:46:34,540 --> 00:46:36,200
Irrid immur lura għal dak li kelli.

874
00:46:36,200 --> 00:46:37,640
Jien biss se tip normalment.

875
00:46:37,640 --> 00:46:39,180
Ikklikkja player.

876
00:46:39,180 --> 00:46:42,920
>> Il-mument I isalvawh, il-
sit refreshes għalija.

877
00:46:42,920 --> 00:46:44,740
U nara bidla tiegħi fuq
is-sit istantanjament.

878
00:46:44,740 --> 00:46:48,170
Din hija karatteristika verament utli
fil debugging għaliex issa

879
00:46:48,170 --> 00:46:49,640
I ma jkollhom -

880
00:46:49,640 --> 00:46:52,920
meta aħna jikteb il-kodiċi C, mhux biss ma we
għandek biex isalva l-fajl, iżda kellna biex

881
00:46:52,920 --> 00:46:54,750
tagħmel dan u mbagħad run mill-ġdid.

882
00:46:54,750 --> 00:46:58,750
Meteor huwa sabiħ ħafna minħabba b'differenza C,
-mument li inti tiffranka HTML tiegħek jew

883
00:46:58,750 --> 00:47:01,070
JavaScript fajl, il-bidla
turi up immedjatament.

884
00:47:01,070 --> 00:47:05,050

885
00:47:05,050 --> 00:47:09,140
>> Wieħed kwistjoni hija, f'dawn templates, kif
nista 'nikseb il-valuri bħall-atturi

886
00:47:09,140 --> 00:47:11,520
jew tagħżel isem?

887
00:47:11,520 --> 00:47:17,130
Jekk I zoom hawn fil-kodiċi tiegħi,
Nara dan għal kull players.

888
00:47:17,130 --> 00:47:19,970
Allura l-template jaf li
I jkollhom players b'xi.

889
00:47:19,970 --> 00:47:22,110
U jaf li hemm
isem magħżul.

890
00:47:22,110 --> 00:47:23,220
Fejn ma dan jiġu minn?

891
00:47:23,220 --> 00:47:25,180
Li ġej mill-JavaScript.

892
00:47:25,180 --> 00:47:30,980
>> U jekk inti tmur leaderboard.js, dan
file, issa meta mmur hawn, għandna

893
00:47:30,980 --> 00:47:33,460
ftit jikkmanda definit.

894
00:47:33,460 --> 00:47:36,400
Dan huwa sintassi Meteor speċjali.

895
00:47:36,400 --> 00:47:38,600
Avviż li inti m'għandekx bżonn
vars jew xejn.

896
00:47:38,600 --> 00:47:42,990
Iżda dawn huma biss structs fuq structs
fuq structs jew dawn l-oġġetti.

897
00:47:42,990 --> 00:47:45,910
U kollha jien definizzjoni hija l-template
imsejħa leaderboard.

898
00:47:45,910 --> 00:47:47,900
>> Leaderboard għandha tikseb
ħaġa imsejħa players.

899
00:47:47,900 --> 00:47:48,840
U dak li huwa players?

900
00:47:48,840 --> 00:47:51,860
Huwa x'ikun din l-espressjoni prospetti.

901
00:47:51,860 --> 00:47:53,020
U dak huwa l-isem magħżul?

902
00:47:53,020 --> 00:47:54,630
Huwa xi kodiċi aktar.

903
00:47:54,630 --> 00:47:56,810
Id-dettalji tal-kodiċi Aħna ser
ikopru daqsxejn aktar tard.

904
00:47:56,810 --> 00:48:02,210
Imma issa dritt Irrid li inti tifhem
li f'dan il-kodiċi, qegħdin nieħdu

905
00:48:02,210 --> 00:48:04,350
players, u aħna qed jtuha valur.

906
00:48:04,350 --> 00:48:07,000
F'dan il-każ, huwa funzjoni
li gets esegwiti.

907
00:48:07,000 --> 00:48:10,290
Allura aħna jistgħu jiksbu l-valur lura
meta aħna tmexxi l-funzjoni.

908
00:48:10,290 --> 00:48:12,830

909
00:48:12,830 --> 00:48:13,520
Dan huwa log.

910
00:48:13,520 --> 00:48:14,770
Does li jagħmel sens?

911
00:48:14,770 --> 00:48:23,170

912
00:48:23,170 --> 00:48:25,010
>> I tista 'tibdel il-mod huwa magħżula.

913
00:48:25,010 --> 00:48:27,230
Hawnhekk, hemm oġġett tip.

914
00:48:27,230 --> 00:48:31,660
U dak li dan jgħid hu jien ser issolvi
minn punteġġ dixxendenti ewwel u

915
00:48:31,660 --> 00:48:33,170
imbagħad isem axxendenti.

916
00:48:33,170 --> 00:48:36,630
Jekk nibdel dan wieħed, li għaddej
sort axxendenti score.

917
00:48:36,630 --> 00:48:39,120
Allura żero għandha tkun fuq il-quċċata.

918
00:48:39,120 --> 00:48:43,370
U meta I zoom fis-website tiegħi, aħna
issa tara li l-website aġġornata.

919
00:48:43,370 --> 00:48:44,923
U l-punteġġ huwa ascend.

920
00:48:44,923 --> 00:48:49,010

921
00:48:49,010 --> 00:48:53,980
>> Il-funzjoni li jmiss I biss jixtiequ
biex ikopru huwa ikklikkja inkrement.

922
00:48:53,980 --> 00:48:57,910
Mill-interess ta 'żmien, jien mhux ser
tkun kapaċi tkopri aktar ta 'l Meteor

923
00:48:57,910 --> 00:49:00,690
kodiċi, imma hemm ħafna riżorsi
disponibbli, u nkun

924
00:49:00,690 --> 00:49:03,560
hawn wara s-seminar.

925
00:49:03,560 --> 00:49:07,680
Imma I biss trid tkopri
l-avvenimenti leaderboard.

926
00:49:07,680 --> 00:49:10,520
Dan sintassi inti ser jitgħallmu
ftit aktar tard fil-lecture.

927
00:49:10,520 --> 00:49:12,870
Dan huwa JavaScript.

928
00:49:12,870 --> 00:49:16,720
>> Aħna biss qal, meta irridu jiksbu click,
u huwa fuq iż-żieda, dan

929
00:49:16,720 --> 00:49:19,160
hash ifisser biss ID.

930
00:49:19,160 --> 00:49:23,945
Fuq it-tikketta inkrement ID, allura irridu
biex taġġorna - l-kliem ewlieni nixtieq

931
00:49:23,945 --> 00:49:26,740
watch huwa aġġornament u
tagħżel u player.

932
00:49:26,740 --> 00:49:29,080
Allura liema plejer magħżula,
aħna jaġġornah.

933
00:49:29,080 --> 00:49:31,260
U dak li nagħmlu huwa aħna inkrement
punteġġ tagħha b'ħamsa.

934
00:49:31,260 --> 00:49:37,700

935
00:49:37,700 --> 00:49:40,340
U li se jiddeskrivi l-funzjonalità
għandna hawnhekk.

936
00:49:40,340 --> 00:49:50,270

937
00:49:50,270 --> 00:49:54,510
>> Wara t-tmiem ta 'dan is-seminar, aħna ser
tkun tista 'tara xi kodiċi aktar.

938
00:49:54,510 --> 00:50:00,400
Imma jmorru lura għall-għan tiegħi li nixtieq li
tibdel is-sit, jien ridt hawn fuq

939
00:50:00,400 --> 00:50:03,400
żid buttuna neħħi hekk
I tista 'tħassar l-attur.

940
00:50:03,400 --> 00:50:05,390
Allura biex tagħmel dan, għandi bżonn
li tagħmel żewġ affarijiet.

941
00:50:05,390 --> 00:50:09,680
I bżonn li taġġorna l-HTML, taġġorna l-
tara, dak gets murija lill-utent, u

942
00:50:09,680 --> 00:50:15,080
imbagħad għandhom xi JavaScript li meta l-
buttuna hija ppressata, Meteor qed jiġri

943
00:50:15,080 --> 00:50:15,690
li jagħmel xi ħaġa.

944
00:50:15,690 --> 00:50:18,040
Li għaddej biex tneħħi dan il-player.

945
00:50:18,040 --> 00:50:20,720
>> Allura hemm ħafna ta 'biċċiet ta' kodiċi
li għandhom bażikament diġà

946
00:50:20,720 --> 00:50:22,610
sar għalija.

947
00:50:22,610 --> 00:50:26,160
Jekk I ħarsa hawn, I diġà għandhom mod
ta 'jkollna l-attur magħżula.

948
00:50:26,160 --> 00:50:29,880
Li dan il-għalf, jekk inti tista 'tara.

949
00:50:29,880 --> 00:50:31,346
So I biss jekk -

950
00:50:31,346 --> 00:50:35,160
Jien ser ikollhom avveniment ieħor.

951
00:50:35,160 --> 00:50:37,900
Hekk jien ser kopja dak I jkollhom.

952
00:50:37,900 --> 00:50:40,740
Minħabba li din hija lista,
I biss bżonn comma.

953
00:50:40,740 --> 00:50:45,480
>> Allura issa jien ser ikklikkja tħassar.

954
00:50:45,480 --> 00:50:48,840
U mbagħad minflok players aġġornament,
Jien ser tagħmel players tħassar.

955
00:50:48,840 --> 00:50:51,620
U l-atturi kollha iħassru bżonnijiet
huwa player magħżula.

956
00:50:51,620 --> 00:50:56,500
Allura din il-funzjoni hija kollha għandna bżonn.

957
00:50:56,500 --> 00:51:01,550
I do bżonn li żżid xi
HTML hawn għalkemm.

958
00:51:01,550 --> 00:51:05,180
Hekk jekk I iscroll hawn,
dan huwa l-fehma HTML.

959
00:51:05,180 --> 00:51:08,300
Kellna ħaġa hawn,
li kienet tag.

960
00:51:08,300 --> 00:51:09,610
Inti ma għandekx bżonn ninkwetaw dwar dan.

961
00:51:09,610 --> 00:51:12,000
>> Dak li huwa importanti li inti huwa
din iż-żieda ID.

962
00:51:12,000 --> 00:51:14,990
U dan huwa dak li ħallietna nsiru jiġifieri, meta
aħna għafast inkrement, irridu

963
00:51:14,990 --> 00:51:16,410
tagħti ħames punti.

964
00:51:16,410 --> 00:51:18,240
U tkun taf tara li dan huwa buttuna.

965
00:51:18,240 --> 00:51:20,150
Dak hu l BTN mezzi.

966
00:51:20,150 --> 00:51:23,190
U t-test fil-buttuna
huwa jagħti ħames punti.

967
00:51:23,190 --> 00:51:26,440
Allura dak li jien ser tagħmel hu li jien
ser kopja din il-linja.

968
00:51:26,440 --> 00:51:29,910
Jien ser jibdlu l-ID li jitħassar.

969
00:51:29,910 --> 00:51:34,310
U jien se jibdlu l-
test hawn biex tħassar.

970
00:51:34,310 --> 00:51:35,980
>> Sabiex tagħmel ċert kollox tal ffrankati.

971
00:51:35,980 --> 00:51:39,010
Irrid immur lura għall tiegħi JavaScript
jagħmlu ċert li għandi

972
00:51:39,010 --> 00:51:40,880
tħassar ħejjew hawn.

973
00:51:40,880 --> 00:51:41,780
Tajba.

974
00:51:41,780 --> 00:51:43,145
Hekk jien ser jiffranka kemm fajls.

975
00:51:43,145 --> 00:51:46,060

976
00:51:46,060 --> 00:51:49,320
Wara iffrankar fajls kemm, aħna
tista 'tmur lura lejn il-qiegħ.

977
00:51:49,320 --> 00:51:51,550
U issa naraw għandna
a ħassar buttuna.

978
00:51:51,550 --> 00:51:56,050
U wieħed aktar pass.

979
00:51:56,050 --> 00:51:58,200
Tinnota inti tista 'tikseb
żball għaliex meta I ikklikkja

980
00:51:58,200 --> 00:52:00,610
tħassar, xejn jiġri.

981
00:52:00,610 --> 00:52:03,930
>> A mod biex debug dan huwa li jmorru
lura għall Spezzjona Element.

982
00:52:03,930 --> 00:52:07,820
Jien tagħmel dan fuq l-iskop sabiex inti tista '
tara kif inti debug xi ħaġa.

983
00:52:07,820 --> 00:52:11,210
Fil Spezzjona Element, għandna
kollha ta 'test tagħna stabbiliti hawn.

984
00:52:11,210 --> 00:52:13,320
Irrid immur lura għall-console.

985
00:52:13,320 --> 00:52:19,230
U x'jiġri meta mmur hawn
huwa I nikseb xi tip ta 'żball.

986
00:52:19,230 --> 00:52:21,660
Hija tgħid hemm ebda metodu titħassar.

987
00:52:21,660 --> 00:52:30,770
>> Allura dak li dan qed tgħid huwa meta mmur
lura għall-kodiċi, I imsejħa player

988
00:52:30,770 --> 00:52:31,870
ħassar hawn.

989
00:52:31,870 --> 00:52:34,430
Ħassar huwa attwalment mhux
il-kmand dritt.

990
00:52:34,430 --> 00:52:39,740
Allura biex issir taf liema l-kmand dritt
hija, hemm il-API Meteor.

991
00:52:39,740 --> 00:52:42,680
Id-dokumentazzjoni Irrid li punt inti
guys għall huwa biss fil meteor.com.

992
00:52:42,680 --> 00:52:45,190
So I jkollhom it up here.

993
00:52:45,190 --> 00:52:48,510

994
00:52:48,510 --> 00:52:51,370
Dan huwa biss hekk inti guys taf
fejn biex jitgħallmu aktar.

995
00:52:51,370 --> 00:52:54,420
>> Hemm link għall-dokumentazzjoni.

996
00:52:54,420 --> 00:52:59,410
U bażikament, nista 'biss
ma ssib għal ħassar.

997
00:52:59,410 --> 00:53:03,220
U dak li tara, iħassru
huwa attwalment tneħħi.

998
00:53:03,220 --> 00:53:05,400
Dan huwa l-kmand li
I bżonn tirrikorri.

999
00:53:05,400 --> 00:53:09,620
Allura issa li nafu li, jien ser
li tbiddel dan tħassar biex jitneħħew.

1000
00:53:09,620 --> 00:53:13,060

1001
00:53:13,060 --> 00:53:18,010
Allura issa, meta mmur lura għall-leaderboard tiegħi
sit, jien ser ikklikkja

1002
00:53:18,010 --> 00:53:19,450
iħassru, u issa jien marret.

1003
00:53:19,450 --> 00:53:21,290
M'hemm l-ebda Roger aktar.

1004
00:53:21,290 --> 00:53:25,470
And I tista 'żżomm għaddej tħassar kull
isem wieħed sal I jkollhom xejn xellug.

1005
00:53:25,470 --> 00:53:33,600

1006
00:53:33,600 --> 00:53:36,060
>> Allura li kien preview ftit
ta 'kif tuża Meteor.

1007
00:53:36,060 --> 00:53:38,990

1008
00:53:38,990 --> 00:53:42,380
Int ser jitgħallmu ħafna aktar JavaScript
u HTML meħtieġ li jsiru

1009
00:53:42,380 --> 00:53:46,970
ħarsa prettier, li aħna ser ikopru
din il-ġimgħa [? biċċa?] stabbiliti għall HTML

1010
00:53:46,970 --> 00:53:49,630
u JavaScript fil-li jmiss
[? biċċa?] stabbiliti.

1011
00:53:49,630 --> 00:53:53,150
>> Allura ma jsibux inkwetat jekk mhux kollha
dan il-għalf taqa faċli għalik.

1012
00:53:53,150 --> 00:53:56,410
Se Saż-żmien ta
il-proġett finali.

1013
00:53:56,410 --> 00:53:58,030
Grazzi għall juru up.

1014
00:53:58,030 --> 00:54:01,380
Il-link I se taġġorna dalwaqt wara l-
seminar sabiex inti tista 'tara ftit aktar

1015
00:54:01,380 --> 00:54:05,630
eżempji li stajt implimentati fuq kif
biex jiksbu l-leaderboard aktar avvanzati

1016
00:54:05,630 --> 00:54:08,640
li nkun fuq dan is-sit hawn fuq
one-radikali leaderboard.meteor.

1017
00:54:08,640 --> 00:54:19,550

1018
00:54:19,550 --> 00:54:21,260
Grazzi.

1019
00:54:21,260 --> 00:54:22,760
>> [Applause]

1020
00:54:22,760 --> 00:56:58,070