On Change Example

controllers.application.js

import Ember from 'ember';

export default Ember.Controller.extend({
  appName: 'Ember Twiddle',
  selectorsData: [
    { name: 'mike', value: '1', action: 'alert', options: ["1", "2"] },
    { name: 'steve', value: '2', action: 'alert', options: ["1", "2"]  }
  ],
  
  targetValue: undefined,
  
  onTargetValueChanged: function() {
  	alert(this.get('targetValue'));
  }.observes('targetValue'),
  
  actions: {
  	alert(value, name, target) {
    	alert("Hello: " + value + " - " + name + "-" + target);
    }
  }
  
});

templates.application.hbs

<h1>Welcome to {{appName}}</h1>
<br>
<br>
{{outlet}}
<br>
<br>
{{#each selectorsData as |selectorItem|}}
	<label>{{selectorItem.name}}</label>
   <select onchange={{action (action selectorItem.action selectorItem.value selectorItem.name) value="target.value"}}>
   		{{#each selectorItem.options as |option|}}
      	<option value={{option}}>{{option}}</option>
      {{/each}}
   </select>
   <br>
{{/each}}

twiddle.json

{
  "version": "0.7.1",
  "EmberENV": {
    "FEATURES": {}
  },
  "options": {
    "use_pods": false,
    "enable-testing": false
  },
  "dependencies": {
    "jquery": "https://cdnjs.cloudflare.com/ajax/libs/jquery/1.11.3/jquery.js",
    "ember": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.3/ember.debug.js",
    "ember-data": "https://cdnjs.cloudflare.com/ajax/libs/ember-data.js/2.4.3/ember-data.js",
    "ember-template-compiler": "https://cdnjs.cloudflare.com/ajax/libs/ember.js/2.4.3/ember-template-compiler.js"
  }
}