jQuery Code Doesn't Work on Success

Question

I have a jQuery ajax code that works perfectly. But I need it to change the class of the button that fires the jQuery ajax event when clicked when successful. But my code on sucess: doesn't work. Please see code below.

jQuery Code

    $(document).ready(function() {
        $('.btn.btn-outline.btn-sm').click(function() {
            var pollQId = $(this).val();
            $.ajax({
                type: "POST",
                url: "Default.aspx/LikePoll",
                data: JSON.stringify({ 'pollQId': pollQId }),
                contentType: "application/json; charset=utf-8",
                datatype: "json",
                success: function() {
                    $(this).addClass("btn btn-primary btn-sm");
                },

                error: function(response) {
                    alert(response.d);
                }
            });
        });
    })

Please help me. Many Thanks.

fuyushimoya · Accepted Answer · 2015-07-25 08:52:06Z

1

The this in the success callback is not the this you expect, to make this param consistent to the clicked button, pass context: this as additional param to your .ajax function.

You can find more info from jQuery.ajax:

context

Type: PlainObject

This object will be the context of all Ajax-related callbacks. By default, the context is an object that represents the Ajax settings
used in the call ($.ajaxSettings merged with the settings passed to
$.ajax).

$(document).ready(function() {
        $('.btn.btn-outline.btn-sm').click(function() {
            var pollQId = $(this).val();
            $.ajax({
                type: "POST",
                url: "Default.aspx/LikePoll",
                data: JSON.stringify({ 'pollQId': pollQId }),
                contentType: "application/json; charset=utf-8",
                datatype: "json",

                // Add this param, so the `this` in the success callback
                // will be the clicked button.
                context: this,

                success: function() {
                    $(this).addClass("btn btn-primary btn-sm");
                },

                error: function(response) {
                    alert(response.d);
                }
            });
        });
    })

answered Jul 25, 2015 at 8:52

fuyushimoya

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1 Comment

Kacey Ezerioha Over a year ago

You are the greatest! Thanks so much.

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