code: function loadHandler (event) {
      const target = event.target;
  
      // change the link to the new file
      link.setAttribute('href', target.result);
  
      // make sure checkbox is no longer checked
      checkbox.checked = false;
  
      // make link not hidden
      link.style.display = '';
  
      // make delete checkbox not hidden
      deleter.style.display = '';
  
      // image uploaded
      if (file.type.match('image.*')) {
        // create image
        const image = new Image();
        image.title = file.name;
        image.src = target.result;
  
        // replace file--link contents
        link = clear(link);
        link.appendChild(image);
      }
      else {
        // non-image file
        link.textContent = file.name;
      }
    }
docs: Load handler for FileReader
  @param  {[type]} event - handler executed when the load event is fired