so is it ok to rely on this behavior in javascript?
----- Original Message ----
From: Rob Desbois <[EMAIL PROTECTED]>
To: [email protected]
Sent: Wednesday, April 18, 2007 1:52:21 AM
Subject: [jQuery] Re: vars in unnamed functions
17By creating a function form your code which uses variables outside its scope,
you've created a 'closure'.
When settings.functionToCallLater() is called after init() has finished,
aVariable has gone out of scope. The function still has access to it however,
because the closure consists of two parts: the code of the function itself, and
a reference to all variables outside its scope that it needs access to.
Have a search on Google for 'javascript closures', there are plenty of good
articles that can explain this more fully than me.
HTH,
rob
On 4/18/07,
Ariel Jakobovits <[EMAIL PROTECTED]> wrote:
this isn't the real code, just a mockup, but ...
can someone explain to me why this works (as in, alert echoes 'ariel'):
var temp = null;
function init ()
{
var aVariable = 'ariel';
var settings = {
functionToCallLater: function (content) {
alert(aVariable);
}
};
temp = new anotherClass(settings);
}
anotherClass.callThatFunction
();
--
Rob Desbois
Eml: [EMAIL PROTECTED]
Tel: 01452 760631
Mob: 07946 705987
"There's a whale there's a whale there's a whale fish" he cried, and the whale
was in full view.
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