Angularjs $http.get doesn't call the callback

Question

I do the $http.get request as soon as my javascript loaded, it works fine in 90% percent of cases, however, sometimes it just dont call the success or error callback, I'm not sure if the request is actually sent or it just doesn't call the callback, it's weird because it works good in 90% of cases, and 100% if I run it on my own computer, if I put this onto remote server, this case will happen...

    $scope.load = function(){
    console.log("Sending request at "+Date());
    $http.get(requestUrl).
      success(function(data, status, headers, config) {
        console.log("Loading Question Succeed");
        $scope.Content = data.Html;
        data = data.Data;
      }).
      error(function(data, status, headers, config) {
        console.log("Loading Question Failed");
      });
};
$timeout($scope.load);

Have you looked at the network tab of your developer console to see if the request is actually being made? Could it be possible that your function that calls get is throwing an error before the get is ever made? Some code would be helpful. — S. Buda, Jan 30 '15 at 21:30
I have console.log in both success and error callback, sometimes they just don't show up and there is no error message... — Michael Yuxi Dong, Jan 30 '15 at 21:39
and I can also see the content, so it definitely succeed, but why it doesn't call the success callback — Michael Yuxi Dong, Jan 30 '15 at 22:28
maybe the response is a page being redirected and that is causing an issue? — Bardh Lohaj, Jan 30 '15 at 23:00
What is the benefit from using `$timeout` with no time param? Are you trying to push this to the bottom of the Angular queue? Why not just call `$scope.load()`? — Davin Tryon, Jan 30 '15 at 23:19
I use timeout because I thought it might be called when the function is not ready, so I put it to the bottom of queue — Michael Yuxi Dong, Jan 30 '15 at 23:43
Can you call $http immediately after you load the page? I mean, usually people call it with a button click, that works fine, if you call it immediately after you load the page, do you need to be careful about something? — Michael Yuxi Dong, Jan 30 '15 at 23:45

score 1 · Accepted Answer · edited May 23 '17 at 12:14

1

You may want to consider using a then() method rather than the traditional success\failure approach. Have a read up on promises or check out this post that explains the differences - Angular HttpPromise: difference between `success`/`error` methods and `then`'s arguments

In the post above take a look at one of the answers at the end which gives at example of using the then() method and also a catch()

Give it a try and see if it gives you more consistent results or if anything is ending up in the catch()

edited May 23 '17 at 12:14

Community

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answered Jan 31 '15 at 21:29

mindparse

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Great answer! Also, after I put {timeout: 7000} in the config argument, it works pretty well! Thank you – Michael Yuxi Dong Feb 01 '15 at 07:41

Angularjs $http.get doesn't call the callback

1 Answers1