vue3中echarts饼图代码

以下是一个简单的饼图示例代码：

<template>
  <div class="echarts-container" ref="echartsDom"></div>
</template>

<script>
import * as echarts from 'echarts';

export default {
  data() {
    return {
      option: {
        title: {
          text: '饼图示例',
          left: 'center'
        },
        tooltip: {
          trigger: 'item',
          formatter: '{a} <br/>{b}: {c} ({d}%)'
        },
        legend: {
          orient: 'vertical',
          left: 'left',
          data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎']
        },
        series: [
          {
            name: '访问来源',
            type: 'pie',
            radius: ['50%', '70%'],
            avoidLabelOverlap: false,
            label: {
              show: false,
              position: 'center'
            },
            emphasis: {
              label: {
                show: true,
                fontSize: '30',
                fontWeight: 'bold'
              }
            },
            labelLine: {
              show: false
            },
            data: [
              { value: 335, name: '直接访问' },
              { value: 310, name: '邮件营销' },
              { value: 234, name: '联盟广告' },
              { value: 135, name: '视频广告' },
              { value: 1548, name: '搜索引擎' }
            ]
          }
        ]
      }
    }
  },
  mounted() {
    this.renderChart();
  },
  methods: {
    renderChart() {
      let echartsDom = this.$refs.echartsDom;
      let myChart = echarts.init(echartsDom);
      myChart.setOption(this.option);
    }
  }
}
</script>

<style scoped>
.echarts-container {
  width: 100%;
  height: 400px;
}
</style>