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>> TEACHER: So, in geolocation zero, I
declared two functions, one called

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geolocate which geolocates the user, and
one called call back which was the

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function that geolocate called
ultimately by way of get current

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position once the browser had figured
out where the user is.

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Now, given that I'm only calling this
function once, and it only exists to

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be called by get current position,
technically, there's no reason that I

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had to declare it as a separate function
and give it its own name.

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Rather, I could have simply implemented
an anonymous function,

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otherwise known as a lambda function,
effectively passing in the code that I

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want to be executed after get current
position has found the user.

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>> In particular, I'd like to
have done the following.

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First, let's highlight and cut this
line of code here in my callback

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function so as to use it later.

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But let's get rid of the callback
function all together.

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Now, inside of the geolocate function,
let's highlight and delete the name of

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the function that I was previously
calling, and instead, declare an

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anonymous function with no
name that still takes an

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argument called Position.

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And then after this, by convention,
let's put an open curly brace.

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Down here let's put the closing curly
brace and the closing parenthesis and

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a semicolon.

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>> And then inside of this otherwise
anonymous function, let's paste in the

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line of code that we'd still
like to be called.

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Ultimately, then, all I've done is
replace a named function with an

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anonymous function but have not changed
the page's functionality.

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But this is arguably a bit cleaner
because I'm not littering my code with

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unnecessarily defined functions.

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Rather, I'm only defining the code I
want to be executed exactly where it's

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meant to be called.

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>> Let's save the file and open
the page in a browser.

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http://localhost /geolocation1/html And
there I still am, in Cambridge,

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Massachusetts.

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Anonymously.

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