New Twiddle

components.some-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  cmdClickWorks: false,
  actions: {
 		log() {
    	console.log('I logged');
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  externalUrl: 'https://google.com'
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
Open chrome inspector and look for "I logged" when cmd-click on links below.
<br>
<br>
{{some-component externalUrl=externalUrl cmdClickWorks=false}}
{{some-component externalUrl=externalUrl cmdClickWorks=true}}
{{outlet}}
<br>
<br>

templates.components.some-component.hbs

{{#if cmdClickWorks}}
<a href={{externalUrl}} onclick={{action 'log'}} style="color:green;">Click me with cmd - works</a>
{{else}}
<a href={{externalUrl}} {{action 'log'}} style="color:red">Click me with cmd - doesn't work</a>
{{/if}}

twiddle.json

{
  "version": "0.10.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.6.0",
    "ember-data": "2.6.1",
    "ember-template-compiler": "2.6.0"
  },
  "addons": {}
}