A closure in JavaScript occurs when a function "remembers" its lexical scope (the variables and functions that were in scope at the time it was created), even if it's executed outside that scope.

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Google’s Closure compiler, for optimizing and transpling JavaScript, no longer needs Java to run. Instead, Java source code is compiled to JavaScript so it can run under Node.js or in a browser.

17 February, 2012. It was a Friday. If you write any code in JavaScript then you’ve probably used closures, but do you actually understand what they are and how they work? Taking the time to ...