What does the following code mean in JavaScript :
(function() {
})();
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its a syntax for creating new function. – Sai Kalyan Kumar Akshinthala Jan 09 '15 at 12:08
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Declartion of an anonymous function that is executed as soon as it is defined?! – Rangad Jan 09 '15 at 12:08
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please gothrough this links http://stackoverflow.com/questions/2937227/what-does-function-jquery-mean, http://lostechies.com/derickbailey/2012/05/22/function%E2%80%A6-vs-function%E2%80%A6-or-domready-vs-the-module-pattern/ – Arunprasanth K V Jan 09 '15 at 12:11
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Thats a singleton/IIFE (immediately invoked function expression).
Using an IIFE can be helpful when wanting to use a local scope which eliminates binding to global objects like the window.
There is also a slight performance benefit to this approach as you can pass in commonly used objects to the anonymous function. JavaScript first looks for a property in its local scope then works up the chain.
Simon Staton
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It is a Self-Invoking Anonymous Function.
A self-invoking anonymous runs automatically/immediately when you create it and has no name, hence called anonymous.
silentw
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4It's not self-invoking (the code calling it is not part of the function). It *is* immediately-invoked. The standard term is IIFE (immediately invoked function expression). – T.J. Crowder Jan 09 '15 at 12:11