<chart :option.sync="option"  canvasId="aaa" height="300px"></chart> 

<template lang="wxml">
  <view class="echart">
    <chart :option.sync="option"  canvasId="aaa" height="300px"></chart> 
    <chart1 :option.sync="option1" canvasId="bbb" height="300px"></chart1> 
    <chart2 :option.sync="option2" canvasId="ccc"  height="300px"></chart2> 
  </view>
</template>

import chart from '../../components/echarts';
...
config = {
  usingComponents: {
    'ec-canvas': '../../native/echarts/ec-canvas/ec-canvas'
  }
};
components = {
  chart: chart,
  chart1: chart,
  chart2: chart
};
data = {
  option: {
    title: {
      text: 'ECharts 示例'
    },
    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]
      }
    ]
  },
  option1: {
    title: {
      text: '某站点访问来源',
      subtext: '纯属虚构',
      x: 'center'
    },
    tooltip: {
      trigger: 'item',
      formatter: '{a} <br/>{b} : {c} ({d}%)'
    },
    legend: {
      orient: 'vertical',
      left: 'left',
      data: ['直接访问', '邮件营销', '联盟广告', '视频广告', '搜索引擎']
    },
    series: [
      {
        name: '访问来源',
        type: 'pie',
        radius: '55%',
        center: ['50%', '60%'],
        data: [
          { value: 335, name: '直接访问' },
          { value: 310, name: '邮件营销' },
          { value: 234, name: '联盟广告' },
          { value: 135, name: '视频广告' },
          { value: 1548, name: '搜索引擎' }
        ],
        itemStyle: {
          emphasis: {
            shadowBlur: 10,
            shadowOffsetX: 0,
            shadowColor: 'rgba(0, 0, 0, 0.5)'
          }
        }
      }
    ]
  },
  option2:  {
    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'
      }
    ]
  }
};