[javascript] Translating touch events from Javascript to jQuery

I am using

window.addEventListener("touchstart", function(ev){
    console.log(ev.touches); // good
});

How can I translate this to jQuery? I've tried:

$(window).bind("touchstart",function(ev){
    console.log(ev.touches); // says ev.touches is undefined
}

Any ideas?

$(window).on("touchstart", function(ev) {
    var e = ev.originalEvent;
    console.log(e.touches);
});

I know it been asked a long time ago, but I thought a concrete example might help.