Hi, I'm Nicholas Johnson!

software engineer / trainer / AI enthusiast


We access remote services using the $http service, which we can inject into our controller.

var url = "http://www.mycats.com/api/cats";

This gives us a Promise object, which we can chain callbacks onto. In the callback, we generally push the response in to $scope, then allow the template to take over.

$http.get(url).then(function (response) {
  $scope.cats = response.data;

Once your data is in scope, a digest will fire and your template will automatically update to display it.

Exercise - update the Henchmen to pull from a JSON feed

  1. Have a look through the httpAPIdocumentationhere:<https://docs.angularjs.org/api/ng/service/http API documentation here: <https://docs.angularjs.org/api/ng/service/http>
  2. Refactor your repeat and filter exercise to pull data from a JSON file via AJAX. Remember, your JSON must be well formed to work which means double quotes around all the keys.


JSONP is a hack which lets us make cross site AJAX requests. We use the $http object to make a request. We use the .then to respond when an AJAX request completes.

  .module("app", [])
  .controller("ajaxController", function ($scope, $http) {
    var url = "http://example.com/cats?callback=JSON_CALLBACK";
    $http.jsonp(url).then(function (response) {
      $scope.cats = response.data;

Choose one of the following exercises:

Flickr Exercise

The Flickr JSONP endpoint looks like this:


Pull the Flickr feed from the Internet and display the images.


Allow the user to search for a tag.

The Weather - Exercise

You can pull in data from all over the internet. Here’s the JSONP url for Open Weather Map:


Use Open Weather Map to get the weather for a specific location


Allow the user to search for a city. You can find the Open Weather Map API here: