<form id="form">

输入账号 :<input id="name" type="text" name="name"> <br>

输入年龄 :<input id="age" type="text" name="age"> <br>

输入手机号码 :<input id="mobile" type="text" name="mobile"> <br>

</form>

 $.ajax({

       type: "POST",

       url: ajaxCallUrl,

       data: "Key=Value&Key2=Value2",

       success: function(msg){alert(msg);}

    });

 $.ajax({

         type: "POST",

         url:ajaxUrl,

         data:$('#form').serialize(),// 要提交的表单 $("#formid").serialize()或者$(".form").serialize()

         success: function(msg) {alert(msg);}

     });