vue实现滑动切换效果（仅在手机模式下可用）

touchStart(e) {
  const touch = e.touches[0]
  this.touch.startX = touch.pageX
  this.touch.startY = touch.pageY
 }

touchMove(e) {
  console.log("move");
  const touch = e.touches[0]
  //横向和纵向偏离位置
  const deltaX = touch.pageX - this.touch.startX
  const deltaY = touch.pageY - this.touch.startY
  if (Math.abs(deltaY) > Math.abs(deltaX)) {
  return
  }
  const left = this.currentPlay == 'red' &＃63; 0 : -window.innerWidth
  var offsetWidth = Math.min(0, Math.max(-window.innerWidth,left+deltaX))
  //记录滑动的距离占屏幕宽度的百分比，如果滑动太少则不切换
  this.percent = Math.abs(offsetWidth/window.innerWidth)
  //移动红黄块  
  this.$refs.back.style["transform"] = `translate3d(${offsetWidth}px,0,0)`
  //设置动画时间  
  this.$refs.back.style["transitionDuration"] = 10
 }

touchEnd() {
 console.log("end");
 console.log(this.percent);
 let offsetWidth
 let percent
 //当前为红色，滑动占比大于0.1则切换，否则回到原位置
 if(this.currentPlay === 'red'){
 if(this.percent > 0.1) {
  this.currentPlay = 'yellow'
  offsetWidth = -window.innerWidth
 } else {
  offsetWidth = 0
 }
 } else {
 //当前为黄色，滑动占比大于0.9则切换，否则回到原位置
 if(this.percent <0.9) {
  this.currentPlay = 'red'
  offsetWidth = 0
 } else {
  offsetWidth = -window.innerWidth
 }
 }
 //这里的transform是针对最开始的位置而言，而不是移动过程中的位置
 this.$refs.back.style["transform"] = `translate3d(${offsetWidth}px,0,0)`
 this.$refs.back.style["transitionDuration"] = 10
}