This could be a horrible idea but this is a short function that detects the supported pointer type and returns a string to use with event listeners.

Detect Pointer Type

// Determine the supported pointer event, whether click or touch ect.
function supportedClickEvent() {
	var supportedEvent = 'click';
		
	if( 'ontouchstart' in window ) {
		supportedEvent = 'touchstart';
	}
	else if( window.navigator.msPointerEnabled ) {
		supportedEvent = 'MSPointerDown';
	}
	else if( 'pointerdown' in window ) {
		supportedEvent = 'pointerdown';		
 	}
	return supportedEvent;
}