要求时间轴的点展示进度百分比，线也根据进度不同展示不同长度的颜色

实现效果：

使用的组件库是vant的circle

子组件：

<template>
  <div class="m-timeline-area" :style="`width: ${width}px`">
    <div class="m-timeline">
      <div
        v-for="(item, index) in timelineDesc"
        :key="index"
        :class="['m-timeline-item', {'last': index === timelineDesc.length - 1}]"
      >
        <div class="u-tail" />
        <div class="u-finish" :style="{'--rate':item.ratePercent,'--borderColor':item.rate==100?'rgb(4, 185, 19)':'rgb(0, 128, 255)'}" />
        <div class="u-dot">
          <van-circle
            v-model="item.currentRate"
            layer-color="#e4e4e4"
            :color="item.rate==100?'rgb(4, 185, 19)':item.rate==0?'#e4e4e4':'rgb(0, 128, 255)'"
            :stroke-width="60"
            :rate="item.rate"
            :speed="100"
            size="44px"
            :text="item.text"
          />
        </div>
        <div class="u-content">{{ item.title || '--' }}
          <div class="time">
            <div>计划完成时间：{{ item.planTime }}</div>
            <div>实际完成时间：{{ item.finishTime }}</div>
          </div>

        </div>
      </div>
    </div>
  </div>
</template>
<script>
export default {
  name: 'Timeline',
  props: {
    timelineDesc: { // 时间轴内容数组
      type: Array,
      default: () => {
        return []
      }
    },
    width: { // 时间轴区域总宽度
      type: Number,
      default: 360
    }
  },
  data() {
    return {
      currentRate: 0
    }
  },
  computed: {
    text() {
      return this.currentRate.toFixed(0) + '%'
    }
  }
}
</script>
 <style lang="less" scoped>
 @blue: #1890ff;
 @green: #52c41a;
 @red: #f5222d;
 @gray: rgba(0,0,0,.25);
 .m-timeline-area {
   margin: 0 auto;
   .m-timeline {
     .m-timeline-item {
       position: relative;
       padding-bottom: 10px;
       .u-tail {
         position: absolute;
         top: 44px;
         left: 21px;
         height: calc(100% - 44px);
         border-left: 3px solid #e4e4e4; // 实线
         // border-left: 2px dotted #e8e8e8; // 点线
         // border-left: 2px dashed #e8e8e8; // 虚线
       }
       .u-finish{
         position: absolute;
         top: 44px;
         left: 21px;
         height: calc((100% - 44px)*var(--rate));
         border-left: 3px solid var(--borderColor); // 实线
       }
       .u-dot {
         position: absolute;
         width: 40px;
         height: 40px;
       }
       .u-content {
         position: relative;
         top: 8px;
         margin-left: 50px;
         word-break: break-all;
         word-wrap: break-word;
         line-height: 24px;
         font-size: 16px;
         font-weight: 500;
         .time{
            font-size: 14px;
            margin-top: 10px;
            font-weight: 400;
         }
       }
     }
     .last {
       .u-tail,.u-finish {
         display: none;
       }
     }
   }
 }
 </style>

父组件

 <time-line :timeline-desc="timelineDesc" :width="480" />
import TimeLine from './TimeLine'
  data() {
    return {
      timelineDesc: [
        { title: '启动', planTime: '2024-10-20', finishTime: '2023-12-30', rate: 100, currentRate: 0, text: '100%', ratePercent: 1 },
        { title: '需求确认', planTime: '2024-10-20', finishTime: '2023-12-30', rate: 60, currentRate: 0, text: '60%', ratePercent: 0.6 },
        { title: '项目开发', planTime: '2024-10-20', finishTime: '2023-12-30', rate: 30, currentRate: 0, text: '30%', ratePercent: 0.3 },
        { title: '功能测试', planTime: '2024-10-20', finishTime: '2023-12-30', rate: 0, currentRate: 0, text: '0%', ratePercent: 0 },
        { title: '上线', planTime: '2024-10-20', finishTime: '2023-12-30', rate: 0, currentRate: 0, text: '0%', ratePercent: 0 }
      ],
    }
}