JSを利用したXMLファイルの読み込み・読み込み例を詳しく解説

var xmlFileName="xxFile.xml";
var xmlDoc='';
if (window.ActiveXObject){ // IE
  var activeXNameList=new Array("MSXML2.DOMDocument.6.0","MSXML2.DOMDocument.5.0","MSXML2.DOMDocument.4.0","MSXML2.DOMDocument.3.0","MSXML2.DOMDocument","Microsoft.XMLDOM","MSXML.DOMDocument");
  for(var h=0;h<activeXNameList.length;h++)
  {
    try{
      xmlDoc=new ActiveXObject(activeXNameList[h]);
    }catch(e){
      continue;
    }
    if(xmlDoc) break;
  }
}else if(document.implementation && document.implementation.createDocument){ //非 IE
  xmlDoc=document.implementation.createDocument("","",null);
}else{
  alert(&#39;can not create XML DOM object, update your browser please...&#39;);
}
xmlDoc.async=false; //同步,防止后面程序处理时遇到文件还没加载完成出现的错误,故同步等XML文件加载完再做后面处理
xmlDoc.load(xmlFileName); //加载XML

<visiter>
  <area areaid="shenzhen">
    <areaname>shenzhen</areaname>
    <user userid="001">
      <name>shenzhenNBA</name>
      <sex>man</sex>
    </user>
  </area>
  <area areaid="shanghai">
    <areaname>shenzhen</areaname>
    <user userid="002">
      <name>xiaoming</name>
      <sex>woman</sex>
    </user>
    <user userid="003">
      <name>zhangsan</name>
      <sex>man</sex>
    </user>
  </area>
</visiter>

//JS读取 XML 文件中的 area 节点的方式如下:
var nodeList= xmlDoc.documentElement.getElementsByTagName("area")； // IE
for(var i=0;i<nodeList.length;i++){
  //...遍历操作...
}
var nodeList=xmlDoc.getElementsByTagName("area"); // 非IE
for(var i=0;i<nodeList.length;i++){
  //...遍历操作...
}