this.createXMLDom = function() {

        var xmldoc;

        var xmlFile = "XXXXXXXXX.xml";

        if (window.ActiveXObject) {

            xmldoc = new ActiveXObject("Microsoft.XMLDOM");

            xmldoc.async = false;

            //和FireFox一致，设为true;

            xmldoc.preserveWhiteSpace = true;

            xmldoc.load(xmlFile);

        }

            //firefox

        else if (navigator.userAgent.indexOf("Firefox") > 0) {

            xmldoc = document.implementation.createDocument("", "doc", null);

            xmldoc.async = false;

            xmldoc.load(xmlFile);

        }

            //chrome

        else {

            var xmlhttp = new window.XMLHttpRequest();

            xmlhttp.open("GET", xmlFile, false);

            xmlhttp.send(null);

            if (xmlhttp.readyState === 4) {

                xmldoc = xmlhttp.responseXML.documentElement;

            }

        }

        return xmldoc;

    }

        //加载XML文件

        var xmlDom = _this.createXMLDom();

        var elements = xmlDom.getElementsByTagName("data");

        var data = "";

        for (var i = 0; i < elements.length; i++) {

            var name = elements[i].getElementsByTagName("name")[0].firstChild.nodeValue;

            var path = elements[i].getElementsByTagName("path")[0].firstChild.nodeValue;

            data += "mingcen:";

            data += name;

            data += " path:";

            data += path;

            data += " ";

        }

        alert(data);

<?xml version="1.0" encoding="gb2312"?>

<root>

  <data id="1">

    <name>formal</name>

    <path>XXXXXXXXXXXXX</path>

  </data>

  <data id="2">

    <name>test</name>

    <path>YYYYYYYYYYYYY</path>

  </data>

</root>