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javascript: get length of an object's children

/ Published in: JavaScript
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if you need ecmascript 5 functions then use underscore.js

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  1. Object.prototype.size = function() {
  2.     var size = 0, key;
  3.     for (key in this) {
  4.         if (this.hasOwnProperty(key)) size++;
  5.     }
  6.     return size;
  7. };

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