Add new on input

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  things: Ember.computed(function() {
    return [
      Ember.Object.create({ name: 'thing 1' }),
      Ember.Object.create({ name: 'thing 2' })
    ];
  }),
  
  actions: {
    addThing(event) {
      const startingValue = event.target.value;
      this.get('things').addObject(
        Ember.Object.create({ name: startingValue })
      );
      Ember.run.scheduleOnce('afterRender', () => {
        Ember.$(event.target).val(null);
        Ember.$('.thing-input:last').focus();
      });
    }
  }
});

templates.application.hbs

{{#each things as |thing|}}
	<div>{{input class="thing-input" value=thing.name}}</div>
{{/each}}
<div>
	{{input placeholder="New thing" 
					input=(action (action 'addThing'))}}
</div>

twiddle.json

{
  "version": "0.10.6",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.9.0",
    "ember-data": "2.9.0",
    "ember-template-compiler": "2.9.0",
    "ember-testing": "2.9.0"
  },
  "addons": {}
}