Vue 列表平滑滚动

1. 使用插件

vue-seamless-scroll

网址：https://chenxuan1993.gitee.io/component-document/index_prod#/component/seamless-default

配置参数：
defaultOption () {
                return {
                    step: 0.2, // 数值越大速度滚动越快
                    limitMoveNum: 2, // 开始无缝滚动的数据量 this.dataList.length
                    hoverStop: true, // 是否开启鼠标悬停stop
                    direction: 1, // 0向下 1向上 2向左 3向右
                    openWatch: true, // 开启数据实时监控刷新dom
                    singleHeight: 0, // 单步运动停止的高度(默认值0是无缝不停止的滚动) direction => 0/1
                    singleWidth: 0, // 单步运动停止的宽度(默认值0是无缝不停止的滚动) direction => 2/3
                    waitTime: 1000 // 单步运动停止的时间(默认值1000ms)
                }
            }

2.自我简单实现

export default {
  data() {
    return {
      scrollTimer: null
    }
  },
  methods: {
    scrollFn({ className = '', timeout = 50, speed = 1 }) {
      if (!className) {
        return
      }
      const dom = document.querySelector('.' + className)
      const clientHeight = dom.clientHeight
      const scrollHeight = dom.scrollHeight
      const scroll = scrollHeight - clientHeight
      if (scroll === 0) {
        return
      }
      if (this.scrollTimer) {
        this.pauseTimer()
      }
      dom.addEventListener('mouseenter', this.pauseTimer)
      dom.addEventListener('mouseleave', () => {
        this.scrollFn({ className, timeout, speed })
      })
      this.scrollTimer = setInterval(() => {
        const temp = dom.scrollTop + speed
        dom.scrollTop = temp
        if (scroll <= temp) {
          dom.scrollTop = 0
        }
      }, timeout)
    },
    pauseTimer() {
      clearInterval(this.scrollTimer)
      this.scrollTimer = null
    }
  }
}

使用：

this.scrollFn({
          className: 'list-box', // 容器class
          timeout: 16.66666 // 速率
        })