vue中echarts的使用

1.安裝 echarts 依賴

npm install echarts --save

2.main.js 中引入 echarts 依賴

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

3.封裝 echarts 的組件

在一個項目中我們通常會多次用到圖表，這里建議先封裝成組件再應用；

新建chart.vue文件

<template>
  <div class="chart" :id="id"></div>
</template>

<script>
export default{
  props: ['parOption', 'id', 'domWidth'],
  data () {
    return {
      chart: ''
    }
  },
  created () {

  },
  mounted () {
    this.init()
  },
  components: {

  },
  methods: {
    init () {
      this.chart = this.$echarts.init(document.getElementById(this.id))
      this.chart.setOption(this.parOption)
    }
  },
  watch: {
    parOption: {
      handler (val, oldVal) {
        if (this.chart) {
          this.chart.setOption(val)
        }
      },
      deep: true
    },
    domWidth (val, oldVal) {
　　　 // 刷新圖表
      this.chart.resize()
    }
  }
}
</script>

<style lang="less" scoped>
  .chart{
    width: 100%;
    height: 100%;
  }
</style>

 4.在頁面中引用chart組件

<template>
  <div class="echarts">
    <h2>Echarts 圖表</h2>
    <Chart :parOption="option" id="chart1" :domWidth="domWidth"></Chart>
    <Chart :parOption="option" id="chart2" :domWidth="domWidth"></Chart>
    <Chart :parOption="option" id="chart3" :domWidth="domWidth"></Chart>
  </div>
</template>

<script>
// 引入chart
import Chart from '@/components/chart'
export default{
  data () {
    return {
      tab: '0',
      option: {
        tooltip: {
          trigger: 'item',
          formatter: '{a} <br/>{b} : {c} ({d}%)'
        },
        series: [
          {
            name: '工時統計',
            type: 'pie',
            radius: ['45%', '65%'],
            itemStyle: {
              normal: {
                label: {
                  show: true,
                  formatter: '{b} : {c}'
                },
                labelLine: {show: true}
              }
            },
            label: {
              normal: {
                show: true,
                position: 'outside',
                // position: 'inside',
                textStyle: {
                  fontSize: '14',
                  fontWeight: 'bold'
                },
                formatter: '{b}\n{d}%'
              },
              emphasis: {
                show: true,
                textStyle: {
                  fontSize: '14',
                  fontWeight: 'bold'
                }
              }
            },
            labelLine: {
              normal: {
                show: true,
                length: 15,
                length2: 10,
                lineStyle: {}
              }
            },
            data: []
          }
        ],
        color: ['#b7dd73', '#ffdb8a']
      },
      domWidth: document.documentElement.clientWidth
    }
  },
  created () {

  },
  mounted () {
    // 獲取瀏覽器窗口寬度
    window.onresize = () => {
      const domWidth = document.documentElement.clientWidth
      this.domWidth = domWidth
    }
  },
  methods: {

  },
  components: {
    Chart
  }
}
</script>

<style lang="less" scoped>
  .echarts{
    width: 60%;
    margin: 0 auto;
  }
</style>