效果图

实战代码

<template>
  <el-calendar>
    <template #date-cell="{ data }">
      <el-row :class="data.isSelected ? 'is-selected' : 'sds'">
        {{ data.day.split('-').slice(1).join('-') }}
        {{ data.isSelected ? '✔️' : '' }}
      </el-row>
      <div v-for="(item, index) in textContent(data.day)" :key="index">
                <e-row>
                  <el-col class="center">
                    <el-tag type="warning" class="tag">
                      <el-row v-if="item.xianyue == 0">
                        <el-col :span="17" class="tag">
                          <span>当日限约</span>
                        </el-col>
                        <el-col :span="1"></el-col>
                        <el-col :span="6" class="tag2">
                          <span>0</span>
                        </el-col>
                      </el-row>
                      <el-row v-else>
                        <el-col :span="17" class="tag">
                          <span>当日限约</span>
                        </el-col>
                        <el-col :span="1"></el-col>
                        <el-col :span="6" class="tag2">
                          <span>{{ item.xianyue }}</span>
                        </el-col>
                      </el-row>
                    </el-tag>
                  </el-col>
                </e-row>
                <el-row
                  style="margin-top: 10px"
                  class="yuyue"
                  v-if="item.yiyue && item.sy == 0"
                >
                  <el-col :span="11" class="center">
                    <span>已约</span
                    ><span class="center2" style="">0</span></el-col
                  >
                  <el-col :span="2" class="center">|</el-col>
                  <el-col :span="11" class="center">
                    <span>剩余</span><span class="center2">0</span></el-col
                  >
                </el-row>
                <el-row style="margin-top: 10px" class="yuyue" v-else>
                  <el-col :span="11" class="center">
                    <span>已约</span
                    ><span class="center2" style="">{{
                      item.yiyue
                    }}</span></el-col
                  >
                  <el-col :span="2" class="center">|</el-col>
                  <el-col :span="11" class="center">
                    <span>剩余</span
                    ><span class="center2">{{ item.sy }}</span></el-col
                  >
                </el-row>
              </div>

    </template>
  </el-calendar>
</template>

<style>
.is-selected {
  color: #1989fa;
}
  
  
</style>

<style scoped >
 
:deep .el-calendar__body {
  padding: 4px 20px 35px;
}
:deep .el-calendar-table thead th {
  color: #ffab11;
  font-weight: bold;
  font-size: 25px;
}
.tag {
  display: flex;
  align-items: center;
  height: 2.5vh;
  justify-content: center;
}
.tag2 {
  display: flex;
  align-items: center;
  height: 2.5vh;
  justify-content: center;
  font-size: 18px;
}
.aaa .is-selected .yuyue {
  color: #ffab11;
}
.aaa .datastyle {
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 3rem;
  color: #353636;
  font-weight: 600;
}
:deep .el-calendar-table .el-calendar-day:hover {
  background-color: #faecd8;
}
:deep .el-calendar {
  --el-calendar-selected-bg-color: #faecd8;
}
.aaa .is-selected .datastyle {
  color: #ffab11;
}
.aaa .prev .datastyle {
  color: #c4c5c8;
}
.aaa .next .datastyle {
  color: #c4c5c8;
}
:deep .el-calendar {
  --el-calendar-cell-width: 130px;
}
.center {
  display: flex;
  justify-content: center;
  align-items: center;
}
.center2 {
  display: flex;
  justify-content: center;
  align-items: center;
  color: #ffab11;
  margin-left: 5px;
  font-size: 20px;
}
:deep .el-calendar__header {
  justify-content: center;
}
</style>

<script setup lang="ts">
import { ref, reactive, toRefs, onMounted } from "vue";
import { ElMessage, ElMessageBox } from "element-plus";
  
  const state = reactive({
      tableData: [],
        //测试数据
      calendarData: [
        {
          day: "2022-11-04",
          xianyue: 400,
          yiyue: 5,
          sy: 1,
        },
        {
          day: "2022-11-05",
          xianyue: 500,
          yiyue: 5,
          sy: 1,
        },
        {
          day: "2022-11-06",
          xianyue: 200,
          yiyue: 5,
          sy: 1,
        },
        {
          day: "2022-11-07",
          xianyue: 0,
          yiyue: 0,
          sy: 0,
        },
      ],
    });
  
  
  //处理日期获取后台数据动态渲染上去
    const textContent = (date) => {
        //当前date是拿到上面日历组件当前的日期值 根据该值去筛选测试数据找到对应各个日期下对应的数据return出去
        console.log(date, 1111);
        return state.calendarData.filter((item) => {
          return date === item.day;
        });
      };

</script>

避坑-插槽不生效

#dateCell 驼峰书写