#30DaysOfEmber - Computed Properties Demo

components.navigation-bar.js

// app/components/navigation-bar/component.js
import Component from '@ember/component';
import { computed }  from '@ember/object';

export default Component.extend({
  counter: 0,

  clickCounterDecorated: computed('counter', function() {
    return `Counter: ${this.counter}`;
  }),

  click() {
    this.incrementProperty('counter');
  }
})

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle'
});

templates.application.hbs

{{navigation-bar}}

templates.components.navigation-bar.hbs

<!-- app/components/navigation-bar/template.hbs -->
{{clickCounterDecorated}}

twiddle.json

{
  "version": "0.15.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.3.1/jquery.js",
    "ember": "3.2.2",
    "ember-template-compiler": "3.2.2",
    "ember-testing": "3.2.2"
  },
  "addons": {
    "ember-data": "3.2.0"
  }
}