Vue mobile terminal determines the direction of finger sliding on the screen

<div
      @touchstart="handleTouchstart"
      @touchend="handleTouchend"
      class="slotWrap"
    >

//Screen sliding//Finger pressing the screen handleTouchstart(event){
  this.startTime = Date.now()
  this.startX = event.changedTouches[0].clientX
  this.startY = event.changedTouches[0].clientY
},
//Finger leaves the screen handleTouchend(event){
  const endTime = Date.now()
  const endX = event.changedTouches[0].clientX
  const endY = event.changedTouches[0].clientY
  //Judge the duration of pressing if(endTime - this.startTime >2000){
    return
  }
  //Sliding direction let direction = "";
  //First determine whether the user's sliding distance is legal. If legal: determine the sliding direction. Note that the distance must be added with the absolute value if (Math.abs (endX - this.startX) > 10) {
    //Sliding directionif(Math.abs(endY -this.startY)>30){
      // console.log("The y direction is too offset, so you can't slide")
      return
    }else{
      direction = endX -this.startX >0?"right":"left"
    }
  }else{
    return
  }
  //The user has made a legal sliding operation // console.log('direction'+direction)
  if(direction==='left'){
    if (this.currents+1 === this.list.length) {
      return
    }else{
      this.currents++
      //Trigger event this.$emit('getData')
    }
  }
  if(direction==='right'){
    if (this.currents === 0) {
      return
    }else{
      this.currents--
      //Trigger event this.$emit('getData')
    }
  }
}