//note.xml
<note>
<date>2008-08-08</date>
<to>George</to>
<from>John</from>
<heading>Reminder</heading>
<body>Don't forget the meeting this weekend!</body>
</note>
//readXml.htm
<html>
<head>
<title>E4X</title>
<script type="text/javascript">
var xmlDoc;
function clickHandler()
{
if (window.ActiveXObject)
{
xmlDoc = new ActiveXObject("MSXML.DOMDocument");
if(xmlDoc == null)
{
window.alert("MSXML.DOMDocument isn't installed.");
}
else
{
xmlDoc.async=false;
xmlDoc.load("note.xml");
document.write(xmlDoc.getElementsByTagName("body")[0].firstChild.nodeValue);
}
}
// code for Mozilla, Firefox, etc.
else if(document.implementation && document.implementation.createDocument)
{
xmlDoc= document.implementation.createDocument("","",null)
xmlDoc.load("note.xml");
xmlDoc.onload=function()//anonymous function
{
document.write(xmlDoc.getElementsByTagName("body")[0].firstChild.nodeValue);
}
}
}
</script>
</head>
<body>
<span>nothing</span>
<button onclick="javascript:clickHandler()"/>hello, world.
</body>
</html>
使用E4X可以很方便的读XML，如下：
function clickHandler()
{
xmlDoc=new XML();
xmlDoc.load("note.xml");
document.write(xmlDoc.body); //code for Internet Explorer
}
而且浏览器兼容性好，可是试验一下在IE7和Firefox2.0上都不起作用。IE7报XML未定义，Firefox2.0没反应。
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