jquery异步请求实例

1、用ajax

jsp代码如下：

  
    

   
     $.ajax({
 type:
   
     "
   
     get
   
     "
   
     ,
 dataType:
   
     "
   
     json
   
     "
   
     ,
 url:
   
     "
   
     <%=basePath%>actionSmUser.do?method=getUserMsgByUserId
   
     "
   
     ,
 data:
   
     "
   
     userId=
   
     "
   
     +
   
     userId,
 success:
   
     function
   
     (msg){
 
   
     var
   
      data 
   
     =
   
      eval(
   
     "
   
     (
   
     "
   
     +
   
     msg.responseText
   
     +
   
     "
   
     )
   
     "
   
     );
 alert($(
   
     "
   
     #userName
   
     "
   
     ).val());
 $(
   
     "
   
     #userName
   
     "
   
     ).val(data[
   
     0
   
     ].userName);
 
 }
 });
  
    

2、用getJSON方式：

  
    

   
     $.getJSON(url,
   
     function
   
     (data){
 
   
     if
   
     (data
   
     !=
   
     null
   
      
   
     &&
   
      data
   
     !=
   
     ""
   
     ){
 $(
   
     "
   
     #userIdInput
   
     "
   
     ).val(data[
   
     0
   
     ].userId);
 $(
   
     "
   
     #userNameInput
   
     "
   
     ).val(data[
   
     0
   
     ].userName);
 $(
   
     "
   
     #menusIdInput
   
     "
   
     ).val(data[
   
     0
   
     ].menusId);
 $(
   
     "
   
     #depIdInput
   
     "
   
     ).val(data[
   
     0
   
     ].depId);
 $(
   
     "
   
     #isValidInput
   
     "
   
     ).val(data[
   
     0
   
     ].isValid);
 $(
   
     "
   
     #userIdInput
   
     "
   
     ).attr(
   
     "
   
     disabled
   
     "
   
     ,
   
     true
   
     );
 }
 
 }); 
  
    

两种台Action返回字符串的组织形式可采用JSONArray array 的方式，返回array.toJSONString();