import { createDraggable, utils } from 'animejs';

const [ $disableButton ] = utils.$('.disable');

const draggable = createDraggable('.square');

const disableDraggable = () => draggable.disable();

$disableButton.addEventListener('click', disableDraggable);

<div class="large centered row">
  <div class="square draggable"></div>
</div>
<div class="large row">
  <fieldset class="controls">
    <button class="button disable">Disable</button>
  </fieldset>
</div>