六、Vue中使用滚动插件：better-scroll

1.安装插件

cnpm install better-scroll --save      

2.使用

（1）是元素符合规范

  要想使用 better-scroll 这个插件，必须保证元素符合下列规则：

<div class="wrapper">
  <ul class="content">
    <li>...</li>
    <li>...</li>
    ...
  </ul>
  <!-- you can put some other DOMs here, it won't affect the scrolling -->
</div>      

  案例：

<template>
    //这就相当于 wrapper
    <div class="list" ref="wrapper">
        //这就相当于 content
        <div>
            <div class="area">
                <div class="title border-topbottom">当前城市</div>
                <div class="buttong-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="buttong-list">
                    <div class="button-wrapper">
                        <div class="button">北京</div>
                    </div>
                    <div class="button-wrapper">
                        <div class="button">北京</div>
                    </div>
                    <div class="button-wrapper">
                        <div class="button">北京</div>
                    </div>
                    <div class="button-wrapper">
                        <div class="button">北京</div>
                    </div>
                    <div class="button-wrapper">
                        <div class="button">北京</div>
                    </div>
                    <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>
            <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>
            <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>
        </div>
    </div>
</template>      

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

<template>
  <div class="list" ref="wrapper">
    <div>
      <div class="area">
        <div class="title border-topbottom">当前城市</div>
        <div class="buttong-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="buttong-list">
          <div class="button-wrapper">
            <div class="button">北京</div>
          </div>
          <div class="button-wrapper">
            <div class="button">北京</div>
          </div>
          <div class="button-wrapper">
            <div class="button">北京</div>
          </div>
          <div class="button-wrapper">
            <div class="button">北京</div>
          </div>
          <div class="button-wrapper">
            <div class="button">北京</div>
          </div>
          <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>
      <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>
      <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>
    </div>
  </div>
</template>
<script>
import BScroll from "better-scroll";
export default {
  name: "CityList",
  mounted() {
    const scroll = new BScroll(this.$refs.wrapper);
  }
};
</script>
<style lang="stylus" scoped>
@import '~styles/variable.styl';

// 控制页面上1像素边框显示的颜色
.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: 0.54rem;
    background: #eee;
    padding-left: 0.2rem;
    color: #666;
    text-align: left;
    font-size: 0.26rem;
  }

  .buttong-list {
    overflow: hidden;
    padding: 0.1rem 0.6rem 0.1rem 0.1rem;

    .button-wrapper {
      float: left;
      width: 33.33%;

      .button {
        text-align: center;
        margin: 0.1rem;
        padding: 0.1rem 0;
        border: 0.02rem solid #ccc;
        border-radius: 0.06rem;
      }
    }
  }

  .item-list {
    .item {
      line-height: 0.76rem;
      padding-left: 0.2rem;
      text-align: left;
    }
  }
}
</style>