1. 安装Echarts

npm或者yarn安装

npm install echarts
yarn add echarts

2.main.js全局挂载Echarts

import { createApp } from 'vue'
import App from './App.vue'
 
import * as echarts from 'echarts'
 
const app = createApp(App)
app.config.globalProperties.$echarts = echarts // 全局挂载echarts
app.mount('#app')

3.Vue setup组合式语法使用案例

<template>
  <!--  通过ref获取html元素 宽高必须设置 -->
  <el-row>
    <el-col :offset="8" :span="8">
      <div ref="info" style="width: 100%; height: 600px"></div>
    </el-col>
  </el-row>
</template>
<script setup>
import {  onMounted, ref, inject } from "vue";
const { proxy } = getCurrentInstance()//获取Vue3全局配置
const info = ref();//用来获取对应标签组件

onMounted(() => {
  var infoEl = info.value;//获取ref="info"的标签组件
  var userEc = proxy.$echarts.init(infoEl, "light");//proxy.$echarts是在获取全局配置中的echarts，这样就不需要在每个vue中import echarts了

//此处为图表配置区，可参考Echarts官网替换各种图表
  var option = {
    tooltip: {
      trigger: 'item'
    },
    legend: {
      top: '5%',
      left: 'center'
    },
    series: [
      {
        name: 'Access From',
        type: 'pie',
        radius: ['40%', '70%'],
        avoidLabelOverlap: false,
        itemStyle: {
          borderRadius: 10,
          borderColor: '#fff',
          borderWidth: 2
        },
        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' }
        ]
      }
    ]
  };
  userEc.setOption(option);//将图标挂载到标签组件
});
</script>

（完）