javascript:IE和火狐读xml文件的示例代码

//note.xml

note
date2008-08-08/date
toGeorge/to
fromJohn/from
headingReminder/heading
bodyDon't forget the meeting this weekend!/body
/note

//readXml.htm

html

head

titleE4X/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
spannothing/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。