What's the best way to detect a 'touch screen' device using JavaScript?

Question

I\'ve written a jQuery plug-in that\'s for use on both desktop and mobile devices. I wondered if there is a way with JavaScript to detect if the device has touch screen capa

Answer 1

All browser supported except Firefox for desktop always TRUE because of Firefox for desktop support responsive design for developer even you click Touch-Button or not!

I hope Mozilla will fix this in next version.

I'm using Firefox 28 desktop.

function isTouch()
{
    return !!("ontouchstart" in window) || !!(navigator.msMaxTouchPoints);
}