Kata 3

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  actions: {
    firstAction() {
      console.log(...arguments);
      console.log('first action');
    },
    secondAction() {
      console.log(...arguments);
      console.log('second action');
    },
    
    newAction() {
      arguments[0]();
      arguments[1]();
    }
  }
});

templates.application.hbs

<p>Attempt 1</p>

<button onclick={{action 'firstAction' 'secondAction'}}>
  yey button!
</button>

<p>Attempt 2</p>

<button onclick={{action 'firstAction' (action 'secondAction')}}>
  yey button!
</button>

<p>Attempt 3</p>

<button onclick={{action 'newAction' (action 'firstAction') (action 'secondAction')}}>
  yey button!
</button>

twiddle.json

{
  "version": "0.10.7",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.10.0",
    "ember-data": "2.10.0",
    "ember-template-compiler": "2.10.0",
    "ember-testing": "2.10.0"
  },
  "addons": {}
}