Component Lifecycle Hooks

components.my-component.js

import Ember from 'ember';

export default Ember.Component.extend({
  didInitAttrs(options) {
    console.log('didInitAttrs', options);
  },

  didUpdateAttrs(options) {
    console.log('didUpdateAttrs', options);
  },

  willUpdate(options) {
    console.log('willUpdate', options);
  },

  didReceiveAttrs(options) {
    console.log('didReceiveAttrs', options);
  },

  willRender() {
    console.log('willRender');
  },

  didRender() {
    console.log('didRender');
  },

  didInsertElement() {
    console.log('didInsertElement');
  },

  didUpdate(options) {
    console.log('didUpdate', options);
  },
});

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName:'Ember Twiddle',
  data: {
    a: [{a: 1}, {b: 2}, {c: 3}],
    b: "text"
  }
});

templates.application.hbs

<div>
  <p>appName: {{input type="text" value=appName}}</p>
  <p>Triggers: didUpdateAttrs, didReceiveAttrs, willUpdate, willRender, didUpdate, didRender</p>
</div>

<div>
  <p>data.a.firstObject.a: {{input type="text" value=data.a.firstObject.a}}</p>
  <p>Triggers: willUpdate, willRender, didUpdate, didRender</p>
</div>

<div>
  <p>data.a.b: {{input type="text" value=data.b}}</p>
  <p>Triggers: willUpdate, willRender, didUpdate, didRender</p>
</div>

<hr>

{{my-component name=appName data=data}}

templates.components.my-component.hbs

<p>name: {{name}}</p>

<p>attrs.data.a.firstObject.a: {{attrs.data.a.firstObject.a}}</p>

<p>attrs.data.b: {{attrs.data.b}}</p>

twiddle.json

{
  "version": "0.4.7",
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.6/ember.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/1.13.7/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/1.13.6/ember-template-compiler.js"
  }
}