Capturing ionChange without a framework

Ionic Framework
1

Is it not possible to listen to ionChange events in the following fashion when not using a framework?

<ion-range id="range" min="0" max="10" ionChange="alert(event.target.value)"></ion-range>

The only way I can get it to work is like this:

<ion-range id="range" min="0" max="10"></ion-range>
<script>
      document.getElementById('range').addEventListener('ionChange', function (ev) {
          alert(event.target.value);
      });
</script>

Am hoping to avoid having to manually add listeners to all of my components if possible.

Thanks for any help!