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perelin on 07/19/06


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getElementsByClassName

Published in: JavaScript 

URL: http://www.robertnyman.com/2005/11/07/the-ultimate-getelementsbyclassname/

Plain TextExpand 
  1. /*
  2.     Written by Jonathan Snook, http://www.snook.ca/jonathan
  3.     Add-ons by Robert Nyman, http://www.robertnyman.com
  4. */
  5.  
  6. function getElementsByClassName(oElm, strTagName, strClassName){
  7.     var arrElements = (strTagName == "*" && document.all)? document.all : oElm.getElementsByTagName(strTagName);
  8.     var arrReturnElements = new Array();
  9.     strClassName = strClassName.replace(/\-/g, "\\-");
  10.     var oRegExp = new RegExp("(^|\\s)" + strClassName + "(\\s|$)");
  11.     var oElement;
  12.     for(var i=0; i<arrElements.length; i++){
  13.         oElement = arrElements[i];      
  14.         if(oRegExp.test(oElement.className)){
  15.             arrReturnElements.push(oElement);
  16.         }   
  17.     }
  18.     return (arrReturnElements)
  19. }

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