Component-Reference

application.controller.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  nus: [],
  
  actions: {
  	create(){
      let x = this.get('nus.length');
    	this.get('nus').pushObject('test ' + (x + 4).toString());
    }
  }
});

application.template.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>
{{my-component title="test 1"}}
<hr>
{{my-component title="test 2"}}
<hr>
{{my-component title="test 3"}}
<hr>
<button {{action 'create'}}>Create</button>
{{#each nus as |nu|}}
<br>
*****************************************
<br>
{{my-component title=nu}}
<br>
*****************************************
<br>
{{/each}}

my-component.component.js

import Ember from 'ember';

export default Ember.Component.extend({
  color: {},
  actions: {
  	reset(){
    	this.set('color', {});
    }
  }
});

my-component.template.hbs

{{title}}
{{color.main}}
{{input type='text' value=color.main }}
<button {{action 'reset'}}>RESET</button>

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"
  }
}