var startX,startY,endX,endY,X,Y;
$('body').on('touchstart',function(e){
var touch=e.originalEvent.targetTouches[0];
startX=touch.pageX;
startY=touch.pageY;
}).on('touchend',function(e){
var touch = e.originalEvent.changedTouches[0];
endX=touch.pageX;
endY=touch.pageY;
X=endX-startX;
Y=endY-startY;
if(Y>100){
//下拉
}
})
$('body').on('touchstart',function(e){
var touch=e.originalEvent.targetTouches[0];
startX=touch.pageX;
startY=touch.pageY;
}).on('touchend',function(e){
var touch = e.originalEvent.changedTouches[0];
endX=touch.pageX;
endY=touch.pageY;
X=endX-startX;
Y=endY-startY;
if(Y>100){
//下拉
}
})