import { createDraggable, utils } from 'animejs';

const [ $value ] = utils.$('.value');

let grabs = 0;

createDraggable('.square', {
  container: '.grid',
  onGrab: () => $value.textContent = ++grabs
});

<div class="large padded grid square-grid">
  <pre class="large log row">
    <span class="label">grabs</span>
    <span class="value">0</span>
  </pre>
  <div class="square draggable"></div>
</div>