$ .Post system login check

AJAX way:. $ Post system login check

https://blog.csdn.net/woshisangsang/article/details/66560238?utm_source=blogxgwz5

    < Script type = "text / JavaScript" > 
        function Login () {
             var the userId = $ ( " #userid " ) .val ();
             var the userPassword = $ ( " #userPassword " ) .val ();
             IF (the userId == = "" || the userPassword === "" ) { 
                $ .messager.alert ( ' prompt ' , ' employee number and password can not be empty! ' , ' info ');
                return false;
            }
            $.post("/BankStatistics/LoginServlet?ran='+Math.random()",
                {userId:userId,userPassword:userPassword},
                function(data){
                    var result = eval('('+data+')');
                    if (result.success===true){
                        window.location.href="main.jsp";
                        return to true ; 
                    } 
                    the else { 
                        $ .messager.alert ( ' prompt ' , ' employee ID or password is incorrect, please approve! ' , ' info ' );
                         return  to false ; 
                    } 
                } // function (Data) 
            ); // $. POST 
        } // Login () 
    </ Script >