效果预览，此处的双半圆扇形图是使用v-for循环的出来的

dom部分

<template>
  <div>
    <div class="mainDiv">
      <div class="headTit">全校平台最近作业</div>
      <div class="loopSubject">
        <div id="app" class="charts-wrapper">
          <div v-for="(data, index) in listDatas" :key="index">
            <div class="tipsTxt">
              <div class="h3Title">{
  { data.paperName }}</div>
              <div class="classAndName">
                <span>{
  { data.lastTime | formatTime }}</span>
              </div>
            </div>
            <div class="half-pie-container">
              <di