Ajax 前端与后台交互

$.ajax({
                url: "http://182.92.161.230:3000/session/login",
                method:'POST',
                data: {},
                success: function (data) {
                },
                error: function () {
                }
            });

$.ajax({
                url: "http://182.92.161.230:3000/session/login",
                method:'POST',
                data: {"email":$("#email").val(),"password":$("#password").val()},
                success: function (data) {
                    if(data.errcode==40002)
                    {
                        $("#email-or-password-error").text("邮箱或密码错误");
                        setTimeout(dismiss_error_info(),6000);
                    }
                    if(data.errcode === 0)
                    {
                        localStorage.setItem("data",JSON.stringify(data.data));
                        window.location.href = "http://182.92.161.230/";
                    }
                },
                error: function () {
                }
            });