so#43621420

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
actions: {
    validateRegExp(text,regExpStr){
        let regExpObj = new RegExp(regExpStr)
        if(regExpObj.test(text)){
            console.log('entry matches')
        }else{
            console.log('entry is wrong');  
        }

    },
    showText(text){
        console.log(text);
    }
	}
});

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}}

<div>
 {{my-component
    label="Textfield horizontal"
    textValue="..." 
    regExp="^([a-z0-9]{5})$"
 }}
</div>
<br>
<br>

templates.components.my-component.hbs

<div id="echo-hlabel-tf">
  <span id="tf-label">{{label}}</span>
  <span id="tf-value">
    {{input type="text" value=textValue focus-out=(action 'validateRegExp' textValue regExp) key-up=(action 'showText' textValue)}}
  </span>
</div>

twiddle.json

{
  "version": "0.12.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.12.0",
    "ember-template-compiler": "2.12.0",
    "ember-testing": "2.12.0"
  },
  "addons": {
    "ember-data": "2.12.1"
  }
}