https://stackoverflow.com/questions/45278827/binding-ember-input-component-to-control-update-on-every-key-press/45279143

components.card-input.js

import Ember from 'ember';

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

  actions: {
    handleCardNumber (value) {
      // do some stuff with the value
      console.log(' handleCardNumber ');
      this.set('inputValue', value)
    }
  }
});

controllers.application.js

import Ember from 'ember';

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

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
{{cardNumber}}
<br>
{{card-input placeholder="Card number" action="handleCardNumber" inputValue=cardNumber}}
<br>
{{outlet}}
<br>
<br>

templates.components.card-input.hbs

{{input placeholder=placeholder value=inputValue key-press=action}}

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"
  }
}