var len=$(".wrap .wrap_con").length;

        var wrap=$(".wrap .wrap_con");
        var start;
        for (var i = 0; i < len; ++i) {
            wrap[i].addEventListener('touchstart', function(e){
                var touches = event.touches[0];
                start = { 
                    x: touches.pageX, 
                    y: touches.pageY 
                };
                  e.preventDefault();
                  // /^(?:INPUT|TEXTAREA|A)$/.test(e.target.tagName)||e.preventDefault();
            });

            wrap[i].addEventListener('touchmove', function(e){
                var touches = event.touches[0];
                delta = {
                    x: touches.pageX - start.x,
                    y: touches.pageY - start.y
                };
                console.log(delta.x);
                // this.style.WebkitTransform=oList.style.transform="translateX("+iX+"px)";
                this.style.WebkitTransform="translateX("+delta.x+"px)";
                    
            });

这是代码 touchmove只执行一次 在网上查的 对touchstart e.preventDefault(); 但是也没有效果 仅仅报个《swiperMy.html:69 Ignored attempt to cancel a touchstart event with cancelable=false, for example because scrolling is in progress and cannot be interrupted.请问如何解决 ？??