Input Caret Position (single)

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  
  edited: false,
  
  actions: {
    
    setText(text) {
      this.set('edited', true);
      
      let message = this.get('message');
      message = Ember.copy(message);
      message.text = text;
      this.attrs.updateMessage(message);
    }
  }
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  
  init() {
    this._super(...arguments);
    
    this.set('model', { text: 'Lorem' });
  },
  
  title: Ember.computed('model.text', function() {
  	return this.get('model.text');
  }),
  
  actions: {
    
    updateMessage(message) {
      this.set('model', message);
    }
  }
});

templates.application.hbs

<h1>{{title}}</h1>

{{my-component message=model updateMessage=(action "updateMessage")}}

templates.components.my-component.hbs

<input value={{message.text}} oninput={{action "setText" value="target.value"}}>
<span>Edited: {{edited}}</span>

twiddle.json

{
  "version": "0.8.0",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "2.5.1",
    "ember-data": "2.5.2",
    "ember-template-compiler": "2.5.1"
  }
}