JavaScript - How do I learn about "closures" usage?

From Wikipedia, the free encyclopedia: **Closure (computer science)** > In computer science, a closure is a > function that is evaluated in an > environment containing one or more > bound variables. When called, the > function can access these variables. > The explicit use of closures is > associated with functional programming > and with languages such as ML and > Lisp. Constructs such as objects in > other languages can also be modeled > with closures. To use this inside of JavaScript, can someone point me to an example of how this applies?
I've just written a blog post about closures in JavaScript that you may find helfpul.

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