<body onload="makeRequest('xml/content.xml');"><div id="copy"></div></body>
if(window.XMLHttpRequest){ request = new XMLHttpRequest();}else if(window.ActiveXObject){ request = new ActiveXObject("MSXML2.XMLHTTP");}
request.onreadystatechange = onResponse;request.open("GET". url, true);request.send(null);
if(obj.readyState == 0){ document.getElementById('copy').innerHTML = "Sending Request...";}if(obj.readyState == 1){ document.getElementById('copy').innerHTML = "Loading Response...";}if(obj.readyState == 2){ document.getElementById('copy').innerHTML = "Response Loaded...";}if(obj.readyState == 3){ document.getElementById('copy').innerHTML = "Response Ready...";}if(obj.readyState == 4){if(obj.status == 200){ return true; }else if(obj.status == 404){// 添加一个定制消息或把用户重定向到另外一个页面document.getElementById('copy').innerHTML = "File not found";}else{document.getElementById('copy').innerHTML = "There was a problem retrieving the XML."; }}
var response = request.responseXML.documentElement;
response.getElementsByTagName('header')[0].firstChild.data;
var response = request.responseXML.documentElement;var header = response.getElementsByTagName('header')[0].firstChild.data;document.getElementById('copy').innerHTML = header;
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