HTML5触摸事件(touchstart、touchmove和touchend)

http://blog.csdn.net/kaikai4/article/details/46840317

http://blog.csdn.net/fuqinyijiu/article/details/41315123

//例子

$("body").on("touchstart", function(e) {

    e.preventDefault();

    startX = e.originalEvent.changedTouches[0].pageX,

    startY = e.originalEvent.changedTouches[0].pageY;

});

$("body").on("touchmove", function(e) {

    e.preventDefault();

    moveEndX = e.originalEvent.changedTouches[0].pageX,

    moveEndY = e.originalEvent.changedTouches[0].pageY,

    X = moveEndX - startX,

    Y = moveEndY - startY;

     

    if ( Math.abs(X) > Math.abs(Y) && X > 0 ) {

        alert("left 2 right");

    }

    else if ( Math.abs(X) > Math.abs(Y) && X < 0 ) {

        alert("right 2 left");

    }

    else if ( Math.abs(Y) > Math.abs(X) && Y > 0) {

        alert("top 2 bottom");

    }

    else if ( Math.abs(Y) > Math.abs(X) && Y < 0 ) {

        alert("bottom 2 top");

    }

    else{

        alert("just touch");

    }

});