How to successfully send keys from nodejs to Ajax

Question

I want to send key

(success and failure )

from nodejs like

res.send(JSON.stringify({success : "successfully registered"}));

or

res.send(JSON.stringify({failure : "user already exist"}));

to ajax

I want that if key

failure

occur then show this

user already exist

and if success occur it redirect to next page

My code is this But It not doing according to me

Please solve my problem

 $.ajax(

            {

                url: "/register",

                method: 'POST',

                data: JSON.stringify(data),

                contentType: 'application/json',

                success: function (result) {

                     if(result === 'success')  {

                        window.location= '/profile';    

                    }

                    else

                    {

                        Materialize.toast(result,2000);

                    }},

                      error: function (err) {

                     console.log(err);

                   }})

     });

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Answer 1

Try

res.send({status: "success", message : "successfully registered"});

Same for failure. And to get this

if(result.status == "success") {
    //success code
} else {
    //failure code
}

Also you can get the message for using result.message

How to successfully send keys from nodejs to Ajax

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