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Get elements by class name

Submitted on 01/12/2008
Authors Comment: Return elements by class name given a parent node.
How to use: Return elements by class name given a parent node.
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Snippet:

  1.    
  2.     //+ Jonas Raoni Soares Silva
  3.     //@ http://jsfromhell.com
  4.     function getElementsByClassName(name, parent){
  5.         for(var o = [], n = new RegExp("\\b" + name.replace(/([(){}|*+?.,^$\[\]\\])/g, "\\\$) + "\\b"), l = (parent || document).getElementsByTagName("*"), i = l.length; i--;)
  6.                 n.test(l[i].className) && (o[o.length] = l[i]);
  7.         return o;
  8.     }
 

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