vue3 html2canvas导出透明png图片

<template> <div class="post"> <button @click="exportPNG"> 下载图片 </button> <div id="png"> <div id="myEcharts"> </div> <div id="myEcharts2"> </div> </div> </div> </template> <script lang="js"> import { defineComponent } from 'vue'; import * as echarts from...