Ember twiddle 1

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  _title: 'foo',
  
  title: Ember.computed('_title', function() {
    return this.get('_title');
  }), 
                        
  actions: {
  
  	changeTitle() {
  		console.log('clicked');
  		this.set('_title', 'bar')
		}
                                       
	}
});

templates.application.hbs

<h1 title={{title}}>Welcomee to {{appName}}</h1>
<br>
<br>
{{outlet}}
<button {{action 'changeTitle'}}>Change Title</button>

<br>

twiddle.json

{
  "version": "0.10.5",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.8.0",
    "ember-data": "2.8.0",
    "ember-template-compiler": "2.8.0",
    "ember-testing": "2.8.0"
  },
  "addons": {}
}