$(document).ready(function() {

    $.ajax({

        url : "/AjaxAction/LoginArea.ashx",

        data : {username:user,password:pwd},

        type : "POST",

        //dataType:"json",

        beforeSend: function(XMLHttpRequest){alert("开始请求")}, //加载过程

        success : function(data){alert(data);},

        complete: function(XMLHttpRequest, textStatus){alert("加载结束")},//HideLoading()加载完成;

        error:function(){alert("error occured!!!");} //请求出错处理

   });

});