编辑下面的代码:【加编码】
<html> <head> <script> if (window.XMLHttpRequest) {// code for IE7+, Firefox, Chrome, Opera, Safari xmlhttp=new XMLHttpRequest(); } else {// code for IE6, IE5 xmlhttp=new ActiveXObject("Microsoft.XMLHTTP"); } xmlhttp.open("GET","/demo/xml/cd_catalog.xml",false); xmlhttp.send(); xmlDoc=xmlhttp.responseXML; x=xmlDoc.getElementsByTagName("CD"); i=0; function displayCD() { artist=(x[i].getElementsByTagName("ARTIST")[0].childNodes[0].nodeValue); title=(x[i].getElementsByTagName("TITLE")[0].childNodes[0].nodeValue); year=(x[i].getElementsByTagName("YEAR")[0].childNodes[0].nodeValue); txt="Artist: " + artist + "<br>Title: " + title + "<br>Year: "+ year; document.getElementById("showCD").innerHTML=txt; } function next() { if (i<x.length-1) { i++; displayCD(); } } function previous() { if (i>0) { i--; displayCD(); } } </script> </head> <body onload="displayCD()"> <div id="showCD"></div><br> <input type="button" onclick="previous()" value="&lt;&lt;"> <input type="button" onclick="next()" value="&gt;&gt;"> </body> </html>
结果: 【此窗口】 帮助?
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