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Posted By

brianyang on 09/01/09


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closure functions defined referencing


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closure

 / Published in: JavaScript
 

When a function is defined in another function and it has access to the outer function's context even after the outer function returns.

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  1. function outerFunction(someNum) {
  2.   var someString = 'milk';
  3.   var content = document.getElementById('content');
  4.   function innerFunction() {
  5.     content.innerHTML = someNum + ': ' + someString;
  6.     content = null; // IE memory leak for DOM reference
  7.   }
  8.   innerFunction();
  9. }
  10.  
  11. outerFunction(1);

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