New Twiddle

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
   init(){
     this._super(...arguments);
     this.list = Ember.String.w(this.attrs.list);
   },
   actions:{
  		add(val){
			  this.get('list').pushObject(val);
		}
  }
});

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

{{my-component list='apple orange cucumber' num=1}}<br>
{{my-component list='apple orange cucu' num=2}}<br>
{{outlet}}

templates.components.my-component.hbs

<h2 id="title">da list {{num}}</h2>
{{input value=text}} <br>
<button {{action 'add' text}}>add</button><br>
{{#each list as |item|}}
item: {{item}}<br>
{{/each}}
{{yield}}

twiddle.json

{
  "version": "0.8.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.1",
    "ember-data": "2.5.2",
    "ember-template-compiler": "2.5.1"
  }
}