ember-ajax

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  init(){
  	Ember.$.ajax({
    url: "/ajax_json_echo/",
    type: "GET", 
    dataType: "json",
    timeout: 10,
    success: function(response) { alert(response); },
    error: function(x, t, m) {
        if(t==="timeout") {
            alert("got timeout");
            alert(t);
            alert(x);
            alert(m);
        } else {
            alert('other error');
            alert(t);
            alert(x);
            alert(m);
        }
    	}
		});
  }
  
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}