vue3中使用echarts未显示

一.可借助echarts官网来安装或者如下

// 安装 echarts 组件
// 方法一  个人推荐        
npm install echarts --save
// 方法二  全局安装 容易出现问题
npm install echarts -g

二.在main.js中全局引用

import * as echarts from "echarts";

三.创建 Echarts.vue 组件,将组件添加到 Echarts.vue 中使用即可,如下

html 中div高宽是必须的 id必须唯一

完整代码如下：

<!-- eslint-disable vue/multi-word-component-names -->
<template>
  <div>
    <div id="myChart" :style="{ width: '800px', height: '600px' }"></div>
  </div>
</template>

<script>
export default {
  // eslint-disable-next-line vue/multi-word-component-names
  name: "Echarts",
  mounted() {
    // eslint-disable-next-line @typescript-eslint/no-var-requires
    let echarts = require("echarts");
    let myChart = echarts.init(document.getElementById("myChart"));
    // 绘制图表
    myChart.setOption({
      tooltip: {
        trigger: "item",
      },
      legend: {
        top: "5%",
        left: "center",
      },
      series: [
        {
          name: "Access From",
          type: "pie",
          radius: ["40%", "70%"],
          avoidLabelOverlap: false,
          label: {
            show: false,
            position: "center",
          },
          emphasis: {
            label: {
              show: true,
              fontSize: "40",
              fontWeight: "bold",
            },
          },
          labelLine: {
            show: false,
          },
          data: [
            { value: 1048, name: "Search Engine" },
            { value: 735, name: "Direct" },
            { value: 580, name: "Email" },
            { value: 484, name: "Union Ads" },
            { value: 300, name: "Video Ads" },
          ],
        },
      ],
    });
  },
};
</script>

效果图如下