What is the name of this?

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Explain JavaScript’s encapsulated anonymous function syntax

i don't understand completely what this does, so i wanted to look it up in google but I didn't find anything and realized that I don't know its name; so my question is: What is the name of this construction (?) :

( function ( ... ) {} )( jQuery, window, document );

Thanks in advance guys.

that defines a function, which is then called with 3 parameters — njzk2, Jan 02 '13 at 14:13
Also see http://stackoverflow.com/questions/1634268/explain-javascripts-encapsulated-anonymous-function-syntax — Alex K., Jan 02 '13 at 14:15

score 12 · Accepted Answer · edited May 23 '17 at 12:16

12

It is a Self Executing Anonymous Function, or Immediately Invoked Function Expression (IIFE), as others also answered.

edited May 23 '17 at 12:16

Community

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answered Jan 02 '13 at 14:13

Oded

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score 4 · Answer 2 · answered Jan 02 '13 at 14:13

4

It's called a Self Executing Anonymous Function.

The purpose is to control scope so you aren't referencing globals or poluting the global namespace.

answered Jan 02 '13 at 14:13

Josh

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score 2 · Answer 3 · answered Jan 02 '13 at 14:13

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It's an Self Executing Anonymous Function.

You can use these to prevent polluting or accessing the global (window) namespace with new vars.

answered Jan 02 '13 at 14:13

Cerbrus

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What is the name of this?

3 Answers3