1.下载 GitHub 上的 ecomfe/echarts-for-weixin 项目
2.echarts下载，在线定制，选择图表，代码压缩

3.替换项目ec-canvas中的echarts.js

4.page.json引入

{   "usingComponents": {     "ec-canvas":"../../../../ec-canvas/ec-canvas"   } } 5.js中引入 import * as echarts from "../../../../ec-canvas/echarts"   //初始化 init(arr){       this.lazyComponent.init((canvas,width,height,dpr)=>{         let chart=echarts.init(canvas,null,{           width:width,height:height,devicePixelRation:dpr         })         let option=this.getOption(arr)         chart.setOption(option)         this.chart=chart         return chart       })   },    getOption(arr){       return{

xAxis: {
type: 'category',
data: ['Mon', 'Tue', 'Wed', 'Thu', 'Fri', 'Sat', 'Sun']
},
yAxis: {
type: 'value'
},
series: [
{
data: arr,
type: 'bar'
}
]

} }   //调用  this.lazyComponent=this.selectComponent("#myChart-dom")  this.init([120, 200, 150, 80, 70, 110, 130])