Inputs

controllers.application\.js

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

export default class ApplicationController extends Controller {
	@tracked value = 'Bar';

	@action doSomething() {
  	alert(this.value);
  }

	@action update(evt) {
    const { target } = evt;
    const { value } = target;
  	this.value = value;
  }
}

styles.app\.css

@import "https://unpkg.com/tailwindcss@^2/dist/tailwind.min.css";

body{
	background: #F9FAFB;
}

templates.application\.hbs

<main class="container mx-auto my-8 bg-gray-50">

	<div class="mb-6">
    <a href="https://guides.emberjs.com/v2.18.0/components/handling-events/" class="text-blue-700 block mb-4" target="_blank">https://guides.emberjs.com/v2.18.0/components/handling-events/</a>

    <a href="https://guides.emberjs.com/v3.28.0/components/component-state-and-actions/" class="text-blue-700" target="_blank">https://guides.emberjs.com/v3.28.0/components/component-state-and-actions/</a>
    
    <a href="https://guides.emberjs.com/v3.28.0/components/template-lifecycle-dom-and-modifiers/" class="text-blue-700" target="_blank">https://guides.emberjs.com/v3.28.0/components/template-lifecycle-dom-and-modifiers/</a>
  </div>

	<ControlText
  	placeholder="Foo"
    class="w-full"
    data-test-
    value={{this.value}}
    {{on "blur" this.doSomething}}
    {{on "keypress" this.update}}
  />

	{{outlet}}
</main>

templates.components.control-text\.hbs

<input type="text" class="border rounded p-1" ...attributes>

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",
    "ember-data": "3.18.0",
    "ember-truth-helpers": "3.0.0",
    "ember-modifier": "3.0.0"
  }
}