js读取XML文档

<script type="text/javascript">
function readXML(){
//文件
var xmlFile = "file.xml";
var xmlDoc;
if(window.ActiveXObject){
xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
}else if(document.implementation && document.implementation.createDocument){
xmlDoc = document.implementation.createDocument("", "", null);
}
xmlDoc.async = false;
xmlDoc.load(xmlFile);

var nodeList = xmlDoc.getElementsByTagName("person");
for(var i = 0; i < nodeList.length; i++){
var person = nodeList[i];
var s = person.getElementsByTagName("count")[0].firstChild.data
var users = person.getElementsByTagName("user");
for(var j = 0; j < users.length; j++){
s = s + users[i].getElementsByTagName("name")[0].firstChild.data+"<br />";
s = s + users[i].getElementsByTagName("sex")[0].firstChild.data+"<br />";
}
document.write(s+"<br />")
}
}
</script>

<human>
<person id="1">
<count>1</count>
<user userid="001">
<name>aaa</name>
<sex>man</sex>
</user>
</person>
<person id="2">
<count>2</count>
<user userid="002">
<name>bbb</name>
<sex>woman</sex>
</user>
<user userid="003">
<name>ccc</name>
<sex>man</sex>
</user>
</person>
</human>