var mybody = document.getElementsByTagName('body')[0];
//滑动处理
var startX, startY, moveEndX, moveEndY, X, Y;
mybody.addEventListener('touchstart', function(e) {
e.preventDefault();
startX = e.touches[0].pageX;
startY = e.touches[0].pageY;
}, false);
mybody.addEventListener('touchmove', function(e) {
e.preventDefault();
moveEndX = e.changedTouches[0].pageX;
moveEndY = e.changedTouches[0].pageY;
X = moveEndX - startX;
Y = moveEndY - startY;
if ( Math.abs(X) > Math.abs(Y) && X > 0 ) {
alert("向右");
}
else if ( Math.abs(X) > Math.abs(Y) && X < 0 ) {
alert("向左");
}
else if ( Math.abs(Y) > Math.abs(X) && Y > 0) {
alert("向下");
}
else if ( Math.abs(Y) > Math.abs(X) && Y < 0 ) {
alert("向上");
}
else{
alert("没滑动");
}
});
mybody.addEventListener('touchend', function(e) {
})