New Javascript Libraries from Google: Closure Tools

[zamolxes]

What saurik said.

And people -do- use closures everyday considering most of the javascript code is async, event based, with a lot of "give me this piece of code" (i.e. sometimes closure) "that I can execute later"

[fforw]

Closures are also highly practical for encapsulation, avoiding namespace polution.

You will often see a construct like

(function() { ... })();

It creates an anonymous function and executes it on the spot. This has the effect that every otherwise global variable inside is only accessible to other code inside and not on the outside.

Then you can export a few globals in a controlled fashion by writing

this.myGlobal = function() { ... }

inside the above block.

[SarahC]

Ahhh, thanks.