Demonstrate action closures

components.linear-input.js

import Ember from 'ember';
import { get } from '@ember/object';

export default Ember.Component.extend({
  onChange: null,

  actions: {
  	valueChange() {
    	const onChange = get(this, 'onChange');
      console.log('linear-input', this, onChange);
      onChange && onChange();
    }
  }
});

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  actions: {
  	inputChange() {
    	console.log('my-component', this);
    }
  }
});

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>

{{my-component}}

templates.components.linear-input.hbs

{{yield}}

<button type="button" {{action "valueChange"}}>Change!</button>

templates.components.my-component.hbs

{{linear-input onChange=(action "inputChange")}}

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"
  }
}