1. 在vue-cli项目中安装ECharts

npm install echarts --save

项目文件package.json

{
    "name": "echarts_1",
    "version": "0.1.0",
    "private": true,
    "scripts": {
        "serve": "vue-cli-service serve",
        "build": "vue-cli-service build"
    },
    "dependencies": {
        "core-js": "^3.6.5",
        "echarts": "^4.9.0",
        "vue": "^2.6.11",
        "vue-router": "^3.2.0",
        "vuex": "^3.4.0"
    },
    "devDependencies": {
        "@vue/cli-plugin-babel": "~4.5.0",
        "@vue/cli-plugin-router": "~4.5.0",
        "@vue/cli-plugin-vuex": "~4.5.0",
        "@vue/cli-service": "~4.5.0",
        "vue-template-compiler": "^2.6.11"
    }
}

2. List item在main.js中引入ECharts，并挂载到vue的prototype上

import echarts from "echarts"
Vue.prototype.$echarts = echarts

3. 在vue页面中使用

<template>
  <div class="hello">
    <!-- 为ECharts准备一个具备大小（宽高）的Dom -->
    <div id="main" style="width: 600px; height: 400px"></div>
  </div>
</template>

<script>
export default {
  mounted() {
    this.myChartInit();
  },
  methods: {
    myChartInit() {
      // 基于准备好的dom，初始化echarts实例
      var myChart = this.$echarts.init(document.getElementById("main"));

      // 指定图表的配置项和数据
      var option = {
        title: {
          text: "第一个 ECharts 实例",
        },
        tooltip: {},
        legend: {
          data: ["销量"],
        },
        xAxis: {
          data: ["衬衫", "羊毛衫", "雪纺衫", "裤子", "高跟鞋", "袜子"],
        },
        yAxis: {},
        series: [
          {
            name: "销量",
            type: "bar",
            data: [5, 20, 36, 10, 10, 20],
          },
        ],
      };

      // 使用刚指定的配置项和数据显示图表。
      myChart.setOption(option);
    },
  },
};
</script>

<!-- Add "scoped" attribute to limit CSS to this component only -->
<style scoped>
.hello {
  justify-content: center;
  align-items: center;
  display: -webkit-flex;
}
</style>