Variable keeps getting reset to its original value

Question

My code :

function send() {

    var nop = 6;

    var send_this = {
        nop: nop
    };

    $.ajax({

            type: "GET",
            data: send_this,
            url: "example.com",
            success: function(r) {

                var obj = JSON.parse(r);

                nop = obj.nopval;

                /* some other stuffs*/

            }

        )
    };

}

Now, since I already set the nop to 6 , it will pass 6. But on returning, the json response obj.nopval will return 12 which I want to set to nop. So that next time it sends 12 and return 18 and so on....

What happening here is , it is sending 6 and returning 12 but sending 6 again and returning 12 again. The variable is not getting updated.

what happens is that when you are calling send() function, you are basically assigning value of nop to 6 every time. — Edgar Zakaryan, Dec 21 '14 at 12:47

score 6 · Accepted Answer · answered Dec 21 '14 at 12:47

You are declaring and initializing the nop variable inside your function, so it will start off at 6 every time the function is called. nop needs to exist somewhere outside your function in order for the changes to persist:

var nop = 6; // outside the function

function send() {
    var send_this = {
        nop: nop
    };

    $.ajax({
        type: "GET",
        data: send_this,
        url: "example.com",
        success: function(r) {
            var obj = JSON.parse(r);
            nop = obj.nopval;
            /* some other stuff*/
        }
    });
}

score 1 · Answer 2 · answered Dec 21 '14 at 13:31

1

You need to define your variable outside the function , you are using it in the ajax callback function so everytime you run the function it will reset the value to 6.

answered Dec 21 '14 at 13:31

Hasan Al-Natour

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Variable keeps getting reset to its original value

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