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get elements by class

/ Published in: JavaScript
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  1. function getElementsByClass( searchClass, domNode, tagName) {
  2. 	if (domNode == null) domNode = document;
  3. 	if (tagName == null) tagName = '*';
  4. 	var el = new Array();
  5. 	var tags = domNode.getElementsByTagName(tagName);
  6. 	var tcl = " "+searchClass+" ";
  7. 	for(i=0,j=0; i<tags.length; i++) {
  8. 		var test = " " + tags[i].className + " ";
  9. 		if (test.indexOf(tcl) != -1)
  10. 			el[j++] = tags[i];
  11. 	}
  12. 	return el;

URL: http://www.anyexample.com/webdev/javascript/javascript_getelementsbyclass_function.xml

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