Error handling in getJSON calls

Question

How can you handle errors in a getJSON call? Im trying to reference a cross-domain script service using jsonp, how do you register an error method?

Answer 1

$.getJSON("example.json", function() {
  alert("success");
})
.success(function() { alert("second success"); })
.error(function() { alert("error"); })

It is fixed in jQuery 2.x; In jQuery 1.x you will never get an error callback

Answer 2

This is quite an old thread, but it does come up in Google search, so I thought I would add a jQuery 3 answer using promises. This snippet also shows:

• You no longer need to switch to $.ajax to pass in your bearer token
• Uses .then() to make sure you can process synchronously any outcome (I was coming across this problem .always() callback firing too soon - although I'm not sure that was 100% true)
• I'm using .always() to simply show the outcome whether positive or negative
• In the .always() function I'm updating two targets with the HTTP Status code and message body

The code snippet is:

    $.getJSON({
         url: "https://myurl.com/api",
         headers: { "Authorization": "Bearer " + user.access_token}
    }).then().always(   function (data, textStatus) {
        $("#txtAPIStatus").html(data.status);
        $("#txtAPIValue").html(data.responseText);
    });

Answer 3

In some cases, you may run into a problem of synchronization with this method. I wrote the callback call inside a setTimeout function, and it worked synchronously just fine =)

E.G:

function obterJson(callback) {


    jqxhr = $.getJSON(window.location.href + "js/data.json", function(data) {

    setTimeout(function(){
        callback(data);
    },0);
}