jquery 解析xml对象

$.ajax({
	type: "GET",
        url: "test.xml",
        dataType: "xml",
        success: function(data){
	  $(data).find("student").each(function(i){   
          var id_value=$(this).children("name"); 
          alert("第一次读:"+id_value.text());
          id_value.text("444");
        
	  });
	  $(data).find("student").each(function(i){   
          var id_value=$(this).children("name"); 
          alert("修改后:"+id_value.text());
        
	  });

-------------------------

<stulist>
  <student>
     <name>任贤齐</name>
     <age>36</age>
  </student>
  <student>
     <name>程浩</name>
     <age>32</age>
  </student>
  <student>
     <name>赵敏</name>
     <age>23</age>
  </student>
</<stulist>