ajax使用 ajax+json

首先将ajax写于js方法中,定义事件,让元素触发,触发以后就会有数据产生给服务端

$.ajax({
               type: "POST",
               url: "test.php",
               data: "name=garfield&age=18",
               success: function(data){
                        $("#myDiv").html('<h2>'+data+'</h2>');
                  }
            });

{
	"msg": "login success",
	"status_code": "200",
	"userlist": [{
		"uname": "zhangsan",
		"age": "12"
	}, {
		"uname": "Lisi",
		"age": "22"
	}]
}

function loginMethod(){
		var uname=$("#uname").val();
		 $.ajax({
             type: "POST",
             dataType:"json",
             url: "login.do",
             data: {"uname":uname,"oper":"ajaxlogin"},
             success: function(data){
            	 //回调成功函数
            	 var msg=data.msg;
            	 var list=data.userlist;
                 $("#msg_span").html('<font color="red">'+msg+'</font>');
                 var info="";
                 //展现列表信息
                 for(var i=0;i<list.length;i++){
                	 var u=list[i];
                	 //拼接返回信息
                	 info+="<div style='color:green'>"+u.uname+"</div>";
                 }
                 $("#user_list").html(info);
              },
              error:function(){
            	  $("#msg_span").html('<font color="red">network connect error</font>');
              }
          });
	}