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Posted By

iroybot on 07/11/10

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Last Edited at 07/11/10 03:53am

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getElementsByClass

/ Published in: JavaScript
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  1. function getElementsByClass(searchClass,node,tag) {
  2. 	var classElements = new Array();
  3. 	if ( node == null )
  4. 		node = document;
  5. 	if ( tag == null )
  6. 		tag = '*';
  7. 	var els = node.getElementsByTagName(tag);
  8. 	var elsLen = els.length;
  9. 	var pattern = new RegExp('(^|\\s)'+searchClass+'(\\s|$)');
  10. 	for (i = 0, j = 0; i < elsLen; i++) {
  11. 		if ( pattern.test(els[i].className) ) {
  12. 			classElements[j] = els[i];
  13. 			j++;
  14. 		}
  15. 	}
  16. 	return classElements;
  17. }

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