Tutorial
Immediately-invoked function expressions
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Protect your global environment from being polluted by your code with immediately-invoked function expressions (IIFE). Code within an IIFE is within its own lexical scope:
(function() {
// your stuff here
})();
Passing-In Variables
You can pass variables in the IIFE’s scope with something like this:
(function($) {
// $ == jQuery;
})(jQuery);
