computedpropertiesfireoninputs

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  computedPropertyOnSearchTerm: Ember.computed('searchTerm', function() {
    $('ul').append('<li>i am firing</li>');
    return `(( I am the computed property value -- ${this.get('searchTerm')}))`;
  })
});

templates.application.hbs

<h3>searchTerm: <br/>
{{searchTerm}}</h3>
<br/>
<h3>computedPropertyOnSearchTerm: <br/>
{{computedPropertyOnSearchTerm}}</h3>

{{input value=searchTerm}}
<br/>

<ul>

</ul>

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"
  }
}