code: function(event) {
  		var datalistSelect = event.target,
  			datalist = datalistSelect.parentNode,
  			input = dcmnt.querySelector('input[list="' + datalist.id + '"]');
  
  		// Check for whether the events target was a select or whether the input doesn't exist
  		if (datalistSelect.tagName.toLowerCase() !== 'select' || input === null) {
  			return;
  		}
  
  		// Determine a relevant key - either printable characters (that would have a length of 1) or controlling like Backspace
  		if (event.key && (event.key === 'Backspace' || event.key.length === 1)) {
  			input.focus();
  
  			if (event.key === 'Backspace') {
  				input.value = input.value.substr(0, input.value.length - 1);
  
  				// Dispatch the input event on the related input[list]
  				dispatchInputEvent(input);
  			} else {
  				input.value += event.key;
  			}
  
  			prepOptions(datalist, input);
  		}
  	}
docs: Functions regarding changes to the datalist polyfilling created selects keypress