Vue之如何使用Better-scroll

Better-scroll是什么？

better-scroll 是一款重点解决移动端（已支持 PC）各种滚动场景需求的插件。开发时最常用的滚动条是浏览器自带的滚动条，但是有时一个页面中我们用了很多个组件，这些组件又都定义了一定的绝对位置后，浏览器自带的滚动效果常常是不起作用的，如下图。

如何通过Better-scroll解决上述问题？

1.全局安装better-scroll插件

npm install better-scroll --save

2.这个页面如果要使用better-scroll就必须有正确的布局。举例说明，必须让dom元素符合下列的结构

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下图贴的是我的项目代码，也符合上面的结构

<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="button-list">
          <div class="button-wrapper">
          <div class="button">北京</div>
          </div>
        </div>
      </div>

      <div class="area">
        <div class="title border-topbottom">热门城市</div>
        <div class="button-list">
          <div class="button-wrapper">
          <div class="button">北京</div>
          </div>
        </div>
      </div>

      <div class="area">
        <div class="title border-topbottom">A</div>
        <div class="item-list">
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
        </div>

        <div class="title border-topbottom">B</div>
        <div class="item-list">
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
        </div>

        <div class="title border-topbottom">C</div>
        <div class="item-list">
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
          <div class="item border-bottom">阿拉尔</div>
        </div>

      </div>
    </div>
  </div>
</template>

<script>
import Bscroll from 'better-scroll'
export default {
  name: 'CityList',
  mounted () {
    this.scroll = new Bscroll(this.$refs.wrapper)
  }
}
</script>

<style lang="stylus" scoped>
  @import '~styles/varibles.styl'
  .border-topbottom
    &:before
      border-color: #ccc
    &:after
      border-color: #ccc
  .border-bottom
    &:before
      border-color: #ccc
  .list
    overflow hidden
    position: absolute
    top: 1.58rem
    left: 0
    right: 0
    bottom: 0
    .title
      line-height: .54rem
      background: #eee
      padding-left: .2rem
      color: #666
      font-size: .26rem
    .button-list
      overflow: hidden
      padding: .1rem .6rem .1rem ..1rem
      .button-wrapper
        float: left
        width: 33.33%
        .button
          margin: .1rem
          padding: .1rem 0
          text-align: center
          border: .02rem solid #ccc
          border-radius: .06rem
    .item-list
      .item
        line-height: .76rem
        padding-left: .2rem
</style>

3.只要在js中声明Better-scroll的实例即可使用滚动条效果啦

4.效果展示

可以看到，引入插件后不仅上下拉非常流畅，并且还实现了弹性的效果