A Pen by qj.

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A Pen by qj

A Pen by qj on CodePen.

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script.js

//http://stackoverflow.com/questions/4817029/whats-the-best-way-to-detect-a-touch-screen-device-using-javascript

function is_touch_device() {
  return 'ontouchstart' in window // works on most browsers 
      || 'onmsgesturechange' in window; // works on ie10
};

console.log('is touch device: ' + is_touch_device());
document.write('is touch device: ' + is_touch_device());