Dynamic CSS class added to component

components.example-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  tagName: 'section',
  classNames: ['class-from-component-controller'],
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Dynamic CSS class added to component',
  
  exampleClass: 'warning',
  anotherClass: 'donald',
});

templates.application.hbs

<style>
	.warning {
  	color: red;
  }
  .class-from-component-controller {
    color: green;
  }
  .strong-voice {
  	font-weight: bold;
  }
  .donald {
  	color: orange;
  }
</style>


<h1>{{appName}}</h1>

<div class='{{exampleClass}}'>message in template with dynamic CSS class</div>

{{#example-component}} {{!-- style added in component js --}}
	message in component with internal 'classNames'
{{/example-component}}

{{#example-component classNames=anotherClass class='strong-voice'}}
	message in component with explicitly added 'classNames'
{{/example-component}}

templates.components.example-component.hbs

{{yield}}

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}