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})