精简代码 减少冗余

<template>
  <div class="content">
    <el-row class="content-row">
      <!-- 使用v-for 来减少代码的重复 所有的东西都通过配置项来完成 唯一的变量key
        我们可以把这个数据单独拿出来通过动态取值的方式来完成 -->
      <!-- 同时这种方式也避免了 拿到接口后 在一一给每个值重新赋值 我们可以让key定义为后端返回的字段 -->
      <el-col :span="6" v-for="item in dataInfo" :key="item.key" class="content-col">
        <div class="content-center">
          <!-- <img :src="require("~@/assets/img/one.png")" alt=""> -->
          <div
            :style="{
              backgroundColor: item.color,
              height: '50px',
              lineHeight: '50px',
              textAlign: 'center',
              width: '50px'
            }"
          >
            内容
          </div>
          <div style="margin-top: 20px">
            <span style="margin-right: 5px">{{ item.label }}</span>
            <span>{{ data[item.key] }}</span>
          </div>
        </div>
      </el-col>
    </el-row>
  </div>
</template>

<script>
export default {
  props: {
    data: {
      type: Object,
      default: () => {
        return {
          toBeCompleted: 10,
          completed: 20,
          haveInHand: 13,
          total: 33
        }
      }
    }
  },
  data() {
    return {
      dataInfo: [
        { label: '待完成', key: 'toBeCompleted', color: 'red' },
        { label: '已完成', key: 'completed', color: 'green' },
        { label: '进行中', key: 'haveInHand', color: 'yellow' },
        { label: '总数', key: 'total', color: 'pink' }
      ]
    }
  }
}
</script>

<style lang="scss" scoped>
.content {
  background-color: #99a9bf;
  height: 400px;
  width: 600px;
  border-radius: 10px;
  .content-row {
    height: 100%;
    display: flex;
    justify-content: space-between;
    margin-left: 20px;
    .content-col {
      background-color: #ccc;
      height: 100%;
      margin-right: 20px;
      display: flex;
      align-items: center;
      justify-content: center;
      .content-center {
        display: flex;
        flex-direction: column;
        align-items: center;
      }
    }
  }
}
</style>