Vue项目中添加手势实现左滑右滑操作

• 左滑右滑等手势可通过监听touchstart和touchmove事件实现

• touchstart 记录起始坐标

• touchmove 计算当前位置

• 加上绝对值判断更加精确。

• <div >右滑关闭</div>

 data() {
    return {
      startX: 0,
      startY: 0
    }
  },
  mounted() {
    document.getElementById('rightSwip').addEventListener('touchstart', function(e) {
      // console.log('touchstart:', e)
      e.preventDefault()
      this.startX = e.changedTouches[0].pageX
      this.startY = e.changedTouches[0].pageY
    })
    document.getElementById('rightSwip').addEventListener('touchmove', function(e) {
      // console.log('touchmove:', e)
      e.preventDefault()
      if (e.changedTouches.length) {
        let moveEndX = e.changedTouches[0].pageX
        let moveEndY = e.changedTouches[0].pageY
        let X = moveEndX - this.startX
        let Y = moveEndY - this.startY
        if (Math.abs(X) > Math.abs(Y) && X > 0) {
          console.log("left 2 right", X, Y);
        } else if (Math.abs(X) > Math.abs(Y) && X < 0) {
          console.log("right 2 left", X, Y);
        } else if (Math.abs(Y) > Math.abs(X) && Y > 0) {
          console.log("top 2 bottom", X, Y);
        } else if (Math.abs(Y) > Math.abs(X) && Y < 0) {
          console.log("bottom 2 top", X, Y);
        } else {
          console.log("just touch", X, Y);
        }
      }

    })
  },