vue使用echarts，封装复用组件

echarts是我们项目中常用的插件，在这要封装一个echarts组件，在项目中能够复用

我们先安装依赖

npm install echarts

　安装成功以后在main.js中引入 

import echart from 'echarts'
Vue.prototype.$echarts = echart 

　　在components文件夹下创建c-bar文件夹，c-bar文件夹创建c-bar.vue以及index.js文件

 c-bar.vue文件写入

<template>
    <div class="bar">
      <div :id="id" class="bar_canvas"></div>
    </div>
</template>
<script>
export default {
  name: "c-bar",
  props: ["propData", "id"],
  data() {
    return {
      myChart: null
    };
  },
  mounted() {
    if (this.id) {
      let myChart = this.$echarts.init(document.getElementById(this.id));
      this.myChart = myChart;
      this.myChart.setOption(this.propData);
    }
  }
};
</script>
<style scoped lang="scss">
.bar {
   100%;
  height: 100%;
  position:absolute;
}
.bar_canvas {
   100%;
  height: 100%;
}
</style>

　　index.js文件写入

import cBar from './c-bar.vue';

cBar.install = function (Vue) {
    Vue.component(cBar.name, cBar);
};
export default cBar;

　　然后在main.js中引入组件

import cBar from '@/components/c-bar';
cBar.install(Vue)

　　这样我们就可以全局使用组件了

 我们在使用时

<template>
<div>
    <div class="bar">
    <c-bar :propData="dataArr" id="canvans" class="bar_canvas"></c-bar>
  </div>
  <div class="bar1">
    <c-bar :propData="option" id="can_view" class="bar_canvas1"></c-bar>
  </div>
</div>

</template>

<script>
export default {
  data() {
    return {
      myChart: null,
      option: {
    xAxis: {
        type: 'category',
        data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
    },
    yAxis: {
        type: 'value'
    },
    series: [{
        data: [820, 932, 901, 934, 1290, 1330, 1320],
        type: 'line'
    }]
    },
      dataArr: {
        tooltip: {
          trigger: "item",
          formatter: "{b}: {c} ({d}%)"
        },
        series: [
          {
            name: "",
            type: "pie",
            radius: ["20%", "30%"],
            label: {
              formatter: " {per|{d}%} {b|{b}} ",
              rich: {
                b: {
                  color:"#fff",
                  fontSize: 16,
                  lineHeight: 33
                },
                per: {
                  padding: [2, 4],
                  borderRadius: 2
                }
              }
            },
            data: [
        {
          value: 20,
          name: "win8",
          itemStyle: { normal: { color: "#02B672" } } //设置圆环的颜色
        },
        {
          value: 20,
          name: "win10",
          itemStyle: { normal: { color: "#0FC2E7" } }
        },
        {
          value: 20,
          name: "winXP",
          itemStyle: { normal: { color: "#0C6CE8" } }
        },
        {
          value: 20,
          name: "macOS",
          itemStyle: { normal: { color: "#DF4546" } }
        },
        {
          value: 20,
          name: "win7",
          itemStyle: { normal: { color: "#F7BB2D" } }
        }
      ]
          }
        ]
      }
    };
  }
};
</script>

<style lang="scss">
.bar {
   500px;
  height: 500px;
  position: absolute;
  top: 0;
  right: 0;
}
.bar1 {
   500px;
  height: 500px;
  position: absolute;
  top: 0;
  left: 0;
}
.bar_canvas {
   100%;
  height: 100%;
}
</style>

　　

 这样我们就可以复用了