JavaScript 【跨浏览器处理XML，做个兼容】

//兼容方法
function getXMLDOM(xmlStr) {
var xmlDom = null;
if (typeof window.DOMParser != "undefined") {
xmlDom = (new DOMParser).parseFromString(xmlStr, "text/xml");
var errors = xmlDom.getElementsByTagName("parsererror");
if (errors.length > 0) {
throw new Error("DOM2模型错误信息" + errors[0].textContent);
}

}

else if (typeof window.ActiveXObject != "undefined") {
var version = ['MSXML2.DOMDocument.6.0', 'MSXML2.DOMDocument.3.0', 'MSXML2.DOMDocument'];
for (var i = 0; i < version.length; i++) {
try {
var xmlDom = new ActiveXObject(version[i]);

}

catch (e) {
//跳过
}
}
//放在循环外面才能报错
xmlDom.loadXML(xmlStr); //载入字符串
//xml序列报错
if (xmlDom.parseError != 0) {
throw new Error("错误信息" + xmlDom.parseError.reason);
return xmlDom;
}

}

else { throw new Error('您的系统或浏览器不支持XML DOM对象！'); }

return xmlDom;

}

//序列化
function serializerXML(xmlDom) {
var xml = "";
if (typeof window.XMLSerializer != "undefined") {
xml = (new XMLSerializer()).serializeToString(xmlDom);
}
else if (typeof xmlDom.xml != "undefined") {
xml = xmlDom.xml;

}
return xml;
}

var xmlStr = "<root>\n<user>CPU123</user>\n</root>";xml加载字符串

var xmlDom = getXMLDOM(xmlStr);//调用兼容方法得到一个xml DOM对象

alert(serializerXML(xmlDom));//调用XML序列化

为了跨越所有浏览器兼容，外面放弃了从外部加载XML文件，而使用了字符
串XML加载和序列化