setInterval DOM

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  init() {
    this._super();
 		this.set('model', [1, 2, 3]);
    
    setInterval(() => {
      console.log(Math.random());
       		this.set('model', [Math.round(Math.random() * 10), Math.round(Math.random() * 10), Math.round(Math.random() * 10)]);
    }, 2000);
  }
 
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}

<h1>Naked</h1>

{{#each model as |item index|}}
	<h2>This is item at {{index}}</h2>
{{/each}}

<h1>Naked with changing content</h1>

{{#each model as |item index|}}
	<h2>This is item at {{item}}</h2>
{{/each}}

<h1>With wrapping span</h1>
{{#each model as |item index|}}
	<h2><span>This is item at {{item}}</span></h2>
{{/each}}

<br>
<br>

twiddle.json

{
  "version": "0.15.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.4.3",
    "ember-template-compiler": "3.4.3",
    "ember-testing": "3.4.3"
  },
  "addons": {
    "ember-data": "3.4.2"
  }
}