XML parser - parse xml files in js

Usually we have the following requirements:

1.0 We need to read relational data in js, our first choice isxml file, but how do we read it? Here is the solution...

Step one:

We can define One method: (As long as someone calls it, it will directly return to the parser)

function parseXML(file){
   try //Internet Explorer---ie浏览器的解析器创建方式如下：
   {
    xmlDoc = new ActiveXObject("Microsoft.XMLDOM");
   }
   catch (e) {
    try //Firefox, Mozilla, Opera, etc. 火狐等浏览器的创建方式。
    {
     xmlDoc = document.implementation.createDocument("", "", null);
    }
    catch (e) {
     alert(e.message);
     return;   //如果创建不成功，就直接返回，不往下走。
    }
   }
   xmlDoc.async = false;
   xmlDoc.load(file);
   return xmlDoc;   //返回创建好的解析器，传给调用者。
  }

Second step:

In js Call the method directly to get the parser:

 <script language="JavaScript">
window.onload = function(){
var xmlDoc = parseXML("file.xml");  
//调用上面我们定义的方法，给方法一个参数，参数就是你要解析的xml文件，得到这个文件的对象，也就相当于把xml文件包装成了一个document。
}
 </script>

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