vue3+echarts制作饼状图

1. 安装echarts

npm install echarts --save

2. 创建一个Vue组件

<template>
  <div class="pie-chart"></div>
</template>

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

export default {
  mounted() {
    // 初始化echarts对象
    const chartDom = this.$el;
    const myChart = echarts.init(chartDom);

    // 配置项
    const option = {
      title: {
        text: '饼状图',
        left: 'center'
      },
      tooltip: {
        trigger: 'item',
        formatter: '{a} <br/>{b}: {c} ({d}%)'
      },
      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'}
          ]
        }
      ]
    };

    // 设置配置项并渲染图表
    myChart.setOption(option);
  }
};
</script>

<style scoped>
.pie-chart {
  width: 600px;
  height: 400px;
}
</style>

3. 在Vue应用程序中使用组件

<template>
  <div>
    <pie-chart></pie-chart>
  </div>
</template>

<script>
import PieChart from './components/PieChart.vue';

export default {
  components: {
    PieChart
  }
};
</script>