<script src="./html2canvas.js"></script>
 

    <div id="target"><ol style="margin-top: 8px;margin-bottom: 8px;padding-left: 25px;" class="list-paddingleft-1"><li><p>递归遍历 DOM 树:</p></li><li><img src="./2.png" alt=""></li></ol></div><script>function copyDivToImage() {const element = document.getElementById("target")html2canvas(element).then(canvas => {canvas.toBlob(async (blob) => {try {// 复制到剪贴板  await navigator.clipboard.write([new ClipboardItem({[blob.type]: blob})])console.log("复制ok")} catch (err) {console.error("复制false", err)}},"image/png", // 文件格式1 // 压缩质量 0-1)})}setTimeout(() => {copyDivToImage()}, 1000)</script>

 浏览器剪贴板对 jpeg的支持不大好,  canvas.toBlob() 的参数改成了 "image/png”.