How to test ajax error callback?

Question

Within an ajax request how can the error callback be tested? Is it possible to simulate a network connection error?

$.ajax({

        url: "myUrl",       

        type: 'post',

        dataType : "json",

        data : ({

            myJson

        }),

        success : function(jsonSaveResponse) {  

        },

        error: function (xhr) {

    } 

    }); 

Answer 1

You could simply put an incorrect URL into the URL attribute of the AJAX call., something like this:

 <?php

    header("HTTP/1.0 404 Not Found");

    exit();

    //the rest of your code

You can simply comment it out later when you're done testing your error function.