数据可视化大屏项目开发中，需要一个进度条加载的效果，这里将实现代码记录下来。

动态效果

<template>
  <div class="progressBar">
    <div class="progressBarInner">
      <div class="progressBarInner2" ref="progressBarInner2"></div>
      <div class="list">
        <div class="listItem" v-for="(item,index) in list" :key="index">
          <div class="listItemInner" :class="{'active':active>item.id}" @click="active=item.id">
            <div class="dot"></div>
            <p>{{ item.name }}</p>
          </div>
        </div>
      </div>
    </div>
  </div>
</template>

<script>
import {gsap} from "gsap";

export default {
  name: "title",
  data() {
    return {
      list: [],
      active: 11
    }
  },
  components: {},
  mounted() {
    for (let i = 0; i < 12; i++) {
      this.list.push({
        id: i + 1,
        name: `${i + 1}月`
      });
    }
    this.animateProgressBar();
  },
  methods: {
    animateProgressBar() {
      const progressBar = this.$refs.progressBarInner2;
      gsap.to(progressBar, {
        width: `${(this.active / 12) * 100 - 4}%`,
        duration: 3,
        ease: "power1.out"
      });
    }
  },
  watch: {
    active() {
      this.animateProgressBar();
    }
  }
}
</script>

<style lang="scss" scoped>
.progressBar {
  position: relative;
  width: calc(100% - 0px);
  height: 125px;
  margin: 0 auto;
  display: flex;
  justify-content: flex-start;
  align-items: flex-start;
  flex-wrap: nowrap;
  flex-direction: row;
  align-content: flex-start;

  .progressBarInner {
    height: 3px;
    background: #2973DF;
    width: 100%;
    display: flex;
    justify-content: flex-start;
    align-items: center;
    flex-wrap: nowrap;
    flex-direction: row;
    align-content: flex-start;
    margin-top: 30px;

    .progressBarInner2 {
      height: 3px;
      background: #5CE6FF;
    }

    .list {
      position: absolute;
      left: 0;
      width: 100%;
      height: 50px;
      margin-top: 15px;
      display: flex;
      justify-content: space-between;
      align-items: center;
      flex-wrap: nowrap;
      flex-direction: row;
      align-content: flex-start;

      .listItem {
        width: calc(100% / 12 - 0px);
        height: 100%;
        display: flex;
        justify-content: center;
        align-items: center;
        flex-wrap: nowrap;
        flex-direction: column;
        align-content: flex-start;

        .listItemInner {
          width: 100%;
          height: 100%;
          display: flex;
          justify-content: center;
          align-items: center;
          flex-wrap: nowrap;
          flex-direction: column;
          align-content: flex-start;
          font-size: 12px;
          color: #fff;
          cursor: pointer;

          p {
            font-size: 16px;
            font-family: AlimamaShuHeiTi;
            font-weight: bold;
            color: #D9F7FF;
          }

          .dot {
            background: url("./assets/dot1.png") no-repeat;
            width: 34px;
            height: 34px;
          }
        }
        .listItemInner.active{
          .dot {
            background: url("./assets/dot2.png") no-repeat;
            width: 34px;
            height: 34px;
          }
        }
      }
    }
  }
}
</style>

更多gsap动画效果汇总

gsap动画效果汇总