先上图

 

<div id="mainOne" style="width: 230px;height:130px;"></div>

var dom1 = document.getElementById('mainOne')

 核心代码

 setTemperature(){
        var dom1 = document.getElementById('mainOne')
        var dom2 = document.getElementById('mainTwo')
        var dom3 = document.getElementById('mainThree')
        var myChart = echarts.init(dom1, null, {
          renderer: 'canvas',
          useDirtyRect: false
        })
        var myChart2 = echarts.init(dom2, null, {
          renderer: 'canvas',
          useDirtyRect: false
        })
        var myChart3 = echarts.init(dom3, null, {
          renderer: 'canvas',
          useDirtyRect: false