jquery post 同步异步总结

$.post("/Control/webControl.ashx?rand ="+Math.random(), { Method: "LoginIn", Parems: ps }, function (data, textStatus) {
                $("#pOver").css("visibility", "hidden");                switch (data) {                    case "1":
                        window.location = '/default.aspx';                        break;                    case "0":
                        $("#tips").text("找不到该用户");
                        u.focus();
                        changevcode();
                        errcount++;                        break;                    case "-1":
                        $("#tips").text("用户或密码错误");
                        changevcode();
                        c.val("").focus();
                        errcount++;                        break;                    default:
                        alert(data);
                }
            });

$.ajaxSetup({   
            async : false  
        });

$.ajax({  
         type : "post",  
          url : "register/RegisterState",  
          data : "test=" + test,  
          async : false,  
          success : function(data){  
            data = eval("(" + data + ")");  
            aDataSet = data;  
          }  
     });