1             on: { 2                 touchstart(e){ 3                     e.preventDefault(); 4                     var touch = e.touches[0]; 5                     startX = touch.pageX; 6                     startT = new Date().getTime(); //记录手指按下的开始时间 7                     // isMove = false; //是否产生滑动 8                 }, 9                 touchmove(e){10                     // console.log('touchmove', e);11                     e.preventDefault();12                     var touch = e.touches[0];13                     var deltaX = touch.pageX - startX;14                 },15                 touchend(e){16                     // console.log(e)17                     var touch = e.changedTouches[0]18                     var endX = touch.pageX19                     20                     var index = me.list.indexOf(me.value)21 22 23                     var deltaT = new Date().getTime() - startT;24                     25                     var deltaX = touch.pageX - startX;26                     if (deltaT < 300){27                         if (deltaX > 0){28                             console.log('index', index);29                             30                             if (index === 0) {31                                 index = me.list.length32                             }33                             me.$emit("input", me.list[--index])34                         } else if (deltaX < 0) {35 36                             if (index === me.list.length - 1) {37                                 index = -138                             }39                             me.$emit("input", me.list[++index])40                             console.log('index', index);41                             42                         }43                     } else {44 45                         if (deltaX > bodyWidth * 0.5){46                             console.log('index', index);47                             48                             if (index === 0) {49                                 index = me.list.length50                             }51                             me.$emit("input", me.list[--index])52                         } else if (deltaX < -bodyWidth * 0.5) {53 54                             if (index === me.list.length - 1) {55                                 index = -156                             }57                             me.$emit("input", me.list[++index])58                             console.log('index', index);59                             60                         }61                     }62                     63                         64                     me._getActiveNav()65                 }66             }