classesAndInstances

application.controller.js

import Ember from 'ember';

var Person = Ember.Object.extend({
  say(thing) {
    var name = this.get('name');
    alert(`${name} says: ${thing}`);
  }
});

var Soldier = Person.extend({
  say(thing) {
    // this will call the method in the parent class (Person#say), appending
    // the string ', sir!' to the variable `thing` passed in
    this._super(`${thing}, sir!`);
  }
});

var yehuda = Soldier.create({
  name: 'Yehuda Katz'
});

yehuda.say('Yes');

yehuda.set('age', 34);

document.write(yehuda.get('age'));

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": "2.3.1",
    "ember-data": "2.3.3",
    "ember-template-compiler": "2.3.1"
  }
}