Hi, I'm just learning the JavaScript touch event. For this I created this example: https://codepen.io/itsthomas/pen/BRQzBw?editors=0110 In the above example, you can grab the element and move it to the right or left. It works. However I want to limit the horizontal movement of the element (for example only 100px to the left and 100px to the right). How can I do this? Thanks