getElementsByAttribute

Ever run into a situation where you want to get an array of all elements with a specific attribute? Or even want elements with a certain value for that chosen attribute as well? Just add this code snippet to your script and your problem will be solved.

<!– Paste this snippet into your existing code  –>


/* This script and many more are available free online at
   The JavaScript Source :: http://javascriptsource.com 
   Copyright Robert Nyman, http://www.robertnyman.com
   Free to use if this text is included */

function getElementsByAttribute(oElm, strTagName, strAttributeName, strAttributeValue){
    var arrElements = (strTagName == “*” && document.all)? document.all : oElm.getElementsByTagName(strTagName);
    var arrReturnElements = new Array();
    var oAttributeValue = (typeof strAttributeValue != “undefined”)? new RegExp(“(^|\s)” + strAttributeValue + “(\s|$)”) : null;
    var oCurrent;
    var oAttribute;
    for(var i=0; i<arrElements.length; i++){
        oCurrent = arrElements[i];
        oAttribute = oCurrent.getAttribute(strAttributeName);
        if(typeof oAttribute == “string” && oAttribute.length > 0){
            if(typeof strAttributeValue == “undefined” || (oAttributeValue && oAttributeValue.test(oAttribute))){
                arrReturnElements.push(oCurrent);
            }
        }
    }
    return arrReturnElements;
}