vue中封装echarts公共组件

1、安装echarts

npm install echarts --save
npm install lodash --save  // 若已安装请忽略

2.在mian.js中全局引入

import ElementUI from 'element-ui';
import 'element-ui/lib/theme-chalk/index.css';
Vue.use(ElementUI);

3.下面开始封装图表
baseOption.js文件：公共样式定义，为了统一同网站各种图表的基础样式，比如轴线、图各板块颜色，值仅供参考）：

// baseOption.js
export default {
  color: [
    "#0067E1",
    "#0CC1FF",
    "#00D1B3",
    "#85E814",
    "#FFA082",
  ],
  tooltip: {},
  legend: {
    orient:'horizontal',
    type:'scroll',
    pageIconSize:12,
    pageIconColor:'#aaa', 
    pageIconInactiveColor :'#2f4554',
    pageTextStyle:{
      color:'#999999'
    },
    itemWidth:20,
    itemHeight:12,
    top:0,
    textStyle:{
      color:'#999999'
    },
  },
  grid: {
    top: "13%",
    left: "3%",
    right: "10%",
    bottom: "2%",
    containLabel: true,
  },
  xAxis: [
    {
      axisLine: {
        lineStyle: {
          color: "rgba(65, 97, 128, 0.15)",
          // type: "dashed",
        },
      },
      axisTick: {
        show: false,
      },
      axisLabel: {
        interval:0,
        color: "#rgba(0, 0, 0, 0.25)",
        textStyle: {
          fontSize: 10,
        }
      },
      nameTextStyle:{
        color:'#999999',
        fontSize: 10,
      },
    },
  ],
  yAxis: [
    {
      axisLabel: {
        color: "#rgba(0, 0, 0, 0.25)",
        textStyle: {
          fontSize: 11,
        },
      },
      axisLine: {
        lineStyle: {
          color: "rgba(65, 97, 128, 0.15)",
        },
      },
      splitLine: {
        lineStyle: {
          color: "rgba(65, 97, 128, 0.15)",
        },
      },
      axisTick: {
        show: false,
      },
      nameTextStyle:{
        color:'#999999',
        fontSize: 10,
        padding:[0,20,0,0]
      },
      minInterval: 1
    },
  ],
};

Echart.vue文件：图本身组件:

// Echart.vue
<template>
  <div :id="elId" style="height:100%,width:100%" />
</template>

<script>
import echarts from "echarts";
import { merge, debounce } from "lodash";
// 引入公共样式
import baseOption from "./baseOption"

export default {
  data() {
    return {
      elId: "",
      vOption: {
        series: [],
      },
    };
  },
  props: {
    optionData: Object,
  },
  computed: {
    // 合并配置对象
    option() {
      return merge({}, baseOption, this.vOption, this.optionData);
    },
  },
  created() {
    this.elId = this.uuid();
  },
  mounted() {
    // 实例化echarts对象
    this.$nextTick(() => {
      this.initChart();
    });
  },
  beforeDestroy() {
    if (!this.chart) {
      return;
    }
    this.chart.dispose();
    this.chart = null;
  },
  watch: {
    optionData: {
      deep: true,
      handler: function() {
        this.$nextTick(() => {
          this.initChart();
        });
      },
    },
  },
  methods: {
    // 生成唯一uuid做为唯一标识符
    uuid() {
      return "xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g, function (c) {
        var r = (Math.random() * 16) | 0,
          v = c == "x" ? r : (r & 0x3) | 0x8;
        return v.toString(16);
      });
    },
    // 绘图
    initChart() {
      if(!document.getElementById(this.elId)) return
      this.chart = echarts.init(document.getElementById(this.elId));
      this.chart.setOption(this.option);
      const that = this;
      window.addEventListener(
        "resize",
        debounce(() => {    // 引入debounce，防止频繁更改浏览页尺寸出现页面抖动
          if (that.chart) {
            that.chart.resize();
          }
        }, 100)
      );
    },
  },
};
</script>

4.接下来只需要在需要显示图表的地方引入Echart.vue，传入目标数据就可以了，以下示例数据为饼图：

// index.vue
<template>
  <div class="chartBox">
    <Chart :optionData="chartData"></Chart>
  </div>
</template>

<script>
// 引入Echart.vue组件
import Chart from "./Echart.vue";
export default {
  components: {
    Chart,
  },
  data() {
    return {
      // 图目标数据
      chartData: {
        tooltip: {
          show:true,
          trigger:'item',
          formatter: "{b} : {c} ({d}%)",
        },
        xAxis: [{ show: false }],
        yAxis: [{ show: false }],
        series: [
          {
            name: "访问来源",
            type: "pie", // 饼图
            radius: ["30%", "45%"], // 饼图大小
            data: [
              { value: 1048, name: "搜索引擎" },
              { value: 735, name: "直接访问" },
              { value: 580, name: "邮件营销" },
              { value: 484, name: "联盟广告" },
              { value: 300, name: "视频广告" },
            ],
          },
        ],
      },
    };
  },
};
</script>