var softXMLLib = new SoftXMLLib(); softXMLLib.loadXML(xmlString); if(softXMLLib.loadXMLError!=0){ alert("Invalid XML file!"); } else{ var myUniqueElems = softXMLLib.getUniqueElements(); for(var i=0;i<myUniqueElems.length;i++){ //use nodeName to get tagName of element alert(myUniqueElems[i].nodeName); } }