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

There is something better than checking if they have a touchScreen, is to check if they are using it, plus that's easier to check.

if (window.addEventListener) {
    var once = false;
    window.addEventListener('touchstart', function(){
        if (!once) {
            once = true;
            // Do what you need for touch-screens only
        }
    });
}