实现手淘金刚区类目列表的scroll滑动效果

$ npm install @better-scroll/core@next --save

<template>
  <div class="home-category">
    <div class="scroll-wrapper" ref="scroll">
      <div class="scroll-content" ref="test">
        <div class="scroll-item" v-for="(item, index) in cateList" :key="index">
          <p class="text">{{item}}</p>
        </div>
      </div>
    </div>
    <div class="dot-wrapper">
      <div class="dot" :style="{'transform': `translateX(${rate})`}"></div>
    </div>
  </div>
</template>


<script>
import BScroll from '@better-scroll/core';

export default {
  data() {
    return {
      rate: 0,
      cateList: [1, 2, 3, 4, 5, 6, 7],
    };
  },
  mounted() {
    this.init();
  },
  beforeDestroy() {
    this.bs.destroy();
  },
  methods: {
    init() {
      this.bs = new BScroll(this.$refs.scroll, {
        scrollX: true,
        click: true,
        probeType: 3, // listening scroll hook
      });

      const totalX = Math.abs(this.bs.maxScrollX);

      this._registerHooks(['scroll'], (pos) => {
        const currentX = Math.abs(pos.x);
        this.rate = `${Number((currentX / totalX) * 100).toFixed(2)}%`;
      });
    },
    _registerHooks(hookNames, handler) {
      hookNames.forEach((name) => {
        this.bs.on(name, handler);
      });
    },
  },
};
</script>


<style lang="scss" scoped>
.home-category {
  .scroll-wrapper {
    width: 100%;
    white-space: nowrap;
    overflow: hidden;
  }
  .scroll-content {
    display: inline-block;
    .scroll-item {
      // box-sizing: content-box;
      height: 50px;
      font-size: 24px;
      display: inline-block;
      text-align: center;
      background: red;
      padding: 0 32px;
      line-height: 50px;
      margin: 0 10px;
      .text {
        width: 88px;
      }
    }
  }
  .dot-wrapper {
    width: 80px;
    height: 4px;
    background: rgba(0, 0, 0, 0.1);
    border-radius: 3px;
    margin: 0 auto;
    margin-top: 20px;
    overflow: hidden;
    .dot {
      box-sizing: border-box;
      width: 40px;
      height: 4px;
      background: #f96c1d;
      transition: all 0.4s linear;
    }
  }
}
</style>