New Twiddle

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle'
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
{{disableable-button isDisabled=true}}
{{disableable-button isDisabled=false}}
<br>
<br>

disableable-button.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  state: Ember.computed('isDisabled', function () {
    //alert(this.get('isDisabled'));
  	return this.get('isDisabled') ? 'disabled' : '';
  }),
  
});

disableable-button.template.hbs

<button type="button" disabled={{state}}>foo</button>
{{state}}

twiddle.json

{
  "version": "0.5.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.2.0/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.2.0/ember-template-compiler.js"
  }
}