js遍历xml节点树

  
  

   
   
   
   <
   
   html
   
   >
   
   

   
   <
   
   body
   
   >
   
   

   
   <
   
   script type
   
   =
   
   "
   
   text/javascript
   
   "
   
   >
   
   

   
   var
   
    xmlDoc;

   
   //
   
    code for IE
   
   

   
   if
   
    (window.ActiveXObject)
{
xmlDoc
   
   =
   
   new
   
    ActiveXObject(
   
   "
   
   Microsoft.XMLDOM
   
   "
   
   );
}

   
   //
   
    code for Mozilla, Firefox, Opera, etc.
   
   

   
   else
   
    
   
   if
   
    (document.implementation.createDocument)
{
xmlDoc
   
   =
   
   document.implementation.createDocument(
   
   ""
   
   ,
   
   ""
   
   ,
   
   null
   
   );
}

   
   else
   
   
{
alert(
   
   '
   
   Your browser cannot handle this script
   
   '
   
   );
}
xmlDoc.async
   
   =
   
   false
   
   ;
xmlDoc.load(
   
   "
   
   /example/xmle/note.xml
   
   "
   
   );


   
   var
   
    x
   
   =
   
   xmlDoc.documentElement.childNodes;


   
   for
   
    (
   
   var
   
    i
   
   =
   
   0
   
   ;i
   
   <
   
   x.length;i
   
   ++
   
   )
{ 

   
   if
   
    (x[i].nodeType
   
   ==
   
   1
   
   )
 { 
 
   
   //
   
   Process only element (nodeType 1) nodes
   
   

   
    document.write(x[i].nodeName 
   
   +
   
    
   
   "
   
   : 
   
   "
   
   );
 document.write(x[i].childNodes[
   
   0
   
   ].nodeValue);
 document.write(
   
   "
   
   <br />
   
   "
   
   );
 } 
}

   
   <
   
   /
   
   script>
   
   

   
   <
   
   /
   
   body>
   
   

   
   <
   
   /
   
   html>
   
   

  
  

xml文件

  
  

   
   
   
    
   
   <?
   
   xml version="1.0" encoding="ISO-8859-1" 
   
   ?>
   
    
- 
   
   <!--
   
    Copyright w3school.com.cn 
 
   
   -->
   
    
- 
   
   <
   
   note
   
   >
   
   
 
   
   <
   
   to
   
   >
   
   George
   
   </
   
   to
   
   >
   
    
 
   
   <
   
   from
   
   >
   
   John
   
   </
   
   from
   
   >
   
    
 
   
   <
   
   heading
   
   >
   
   Reminder
   
   </
   
   heading
   
   >
   
    
 
   
   <
   
   body
   
   >
   
   Don't forget the meeting!
   
   </
   
   body
   
   >
   
    
 
   
   </
   
   note
   
   >
  
  

 

结果：

to: George
from: John
heading: Reminder
body: Don't forget the meeting!