在vue中实现echarts随窗体变化

<div id="myChart" :style="{width: '100%', height: '345px'}"></div>
<script> export default {
mounted(){
    this.drawLine();
  },
  methods: {
    drawLine(){
    var myChartContainer = document.getElementById('myChart');      //用于使chart自适应宽度,通过窗体宽计算容器高宽
    var resizeMyChartContainer = function(){
     myChartContainer.style.width=(document.body.clientWidth-75)+'px'
    }     //设置容器高宽
    resizeMyChartContainer()
    // 基于准备好的dom，初始化echarts实例
    var myChart = this.$echarts.init(myChartContainer)
     
    // 绘制图表
    myChart.setOption({
      title: { text: '启动次数' },
      tooltip: {},
      xAxis: {
        type: 'category',
        data: ['2019-02-15', '2019-02-16', '2019-02-17', '2019-02-18', '2019-02-19', '2019-02-20', '2019-02-21']
      },
      yAxis: {
         type:'value'
      },
      series: [{
        type: 'line',
        data: [0,0, 0, 7, 0, 0,12],
        smooth:true,
        symbol: 'circle', 
        symbolSize: 6, 
        itemStyle:{ 
          normal:{ 
             
            color:'#fc8a0f', 
            lineStyle:{ 
              color:'#ff9c35' 
                } 
              } 
            }
      }],
    });
    window.onresize=function(){
     resizeMyChartContainer();
      myChart.resize();
    }
   }
  }}</script>

var map5 = echarts.init(document.getElementById('map5'));
  var option5 = {
    backgroundColor: '#def1f9',
    color: ['#c23531', '#1875ff'],
    title: {
      left: 10,
      top: 10,
      text: 'Bill charts for the past year'
    },
    // color: ['#1875ff', '#1fe6ab', '#eee119', '#ff3074', '#6f99d9'],
    legend: {
      top: 30,
      right: 30
    },
    tooltip: {},
 
    xAxis: {type: 'category'},
    yAxis: {},
    series: [
      {type: 'bar'},
      {type: 'bar'}
    ]
  }
  map5.setOption(option5);
 
  window.onresize = function () {
    setTimeout(function () { 
      map1.resize()
      map2.resize()
      map3.resize()
      map4.resize()
      map5.resize()
    },10)
  }

window.onresize = function () {
   map1.resize() ; // 如果有多个图标变动，可写多个
}