New Twiddle

controllers.application\.js

import Controller from '@ember/controller';
import { action } from '@ember/object';

export default class ApplicationController extends Controller {
  appName = 'Ember Twiddle';

	@action
	hi() {
  	alert('hi');
  }
}

styles.app\.css

body {
  margin: 12px 16px;
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 12pt;
}

.btn-link {
	text-decoration: none; 
}

templates.application\.hbs

<h1>Welcome to {{this.appName}}</h1>

<a href="https://www.auditboard.com/">AuditBoard</a>

{{!-- Add aria-label="Add" so the screen reader doesn't say "plus add" --}}
<a href="#" class="btn-link" {{on "click" this.hi}}>
  + Add
</a>

<button {{on "click" this.hi}}>
	A real button
</button>

twiddle\.json

{
  "version": "0.17.1",
  "EmberENV": {
    "FEATURES": {},
    "_TEMPLATE_ONLY_GLIMMER_COMPONENTS": false,
    "_APPLICATION_TEMPLATE_WRAPPER": true,
    "_JQUERY_INTEGRATION": true
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/3.5.1/jquery.js",
    "ember": "3.18.1",
    "ember-template-compiler": "3.18.1",
    "ember-testing": "3.18.1"
  },
  "addons": {
    "@glimmer/component": "1.0.0"
  }
}