- HTML code
<!--test.html--><html><head><script type="text/javascript">var xmlhttp;function loadXMLDoc(url){ xmlhttp=null; if (window.XMLHttpRequest) {// code for IE7, Firefox, Mozilla, etc. xmlhttp=new XMLHttpRequest(); } else if (window.ActiveXObject) {// code for IE5, IE6 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } if (xmlhttp!=null) { xmlhttp.onreadystatechange=onResponse; xmlhttp.open("GET",url,true); xmlhttp.send(null); } else { alert("Your browser does not support XMLHTTP."); }}function onResponse(){ if(xmlhttp.readyState!=4) return; if(xmlhttp.status!=200) { alert("Problem retrieving XML data"); return; } txt="<table border='1'>"; x=xmlhttp.responseXML.documentElement.getElementsByTagName("CD"); for (i=0;i<x.length;i++) { txt=txt + "<tr>"; xx=x[i].getElementsByTagName("TITLE"); { try { txt=txt + "<td>" + xx[0].firstChild.nodeValue + "</td>"; } catch (er) { txt=txt + "<td> </td>"; } } xx=x[i].getElementsByTagName("ARTIST"); { try { txt=txt + "<td>" + xx[0].firstChild.nodeValue + "</td>"; } catch (er) { txt=txt + "<td> </td>"; } } txt=txt + "</tr>"; } txt=txt + "</table>"; document.getElementById('copy').innerHTML=txt;}</script></head><body> <div id="copy"> <button onclick="loadXMLDoc('cd_catalog.xml')">Get CD info</button><!--明明在这载入了，为什么读不出来数据？--> </div></body></html>- XML code
<!--cd_catalog.xml--><?xml version="1.0" encoding="ISO-8859-1"?><!-- Edited with XML Spy v2007 (http://www.altova.com) --><CATALOG> <CD> <TITLE>Empire Burlesque</TITLE> <ARTIST>Bob Dylan</ARTIST> <COUNTRY>USA</COUNTRY> <COMPANY>Columbia</COMPANY> <PRICE>10.90</PRICE> <YEAR>1985</YEAR> </CD> <CD> <TITLE>Hide your heart</TITLE> <ARTIST>Bonnie Tyler</ARTIST> <COUNTRY>UK</COUNTRY> <COMPANY>CBS Records</COMPANY> <PRICE>9.90</PRICE> <YEAR>1988</YEAR> </CD></CATALOG>
test.html文件会生成一个按钮，预期是点击按钮，然后生成一个表格，但是现在生成不了，为什么？
------解决方案--------------------
按F12，打开IE的开发人员工具，然后查看脚本是否出错误了。
------解决方案--------------------
function createXMLHttpRequest() {
var xmlHttp;
try
{
xmlHttp = new XMLHttpRequest();
}
catch(e)
{
var XmlHttpVersions = new Array("MSXML2.XMLHTTP.6.0",
"MSXML2.XMLHTTP.7.0",
"MSXML2.XMLHTTP.8.0",
"MSXML2.XMLHTTP.9.0",