【html2canvas】网页生成图片官网地址：https://html2canvas.hertzen.com/gith

<div id="capture" style="padding: 10px; background: #f5da55">
    <h4 style="color: #000; ">Hello world!</h4>
</div>

html2canvas(document.querySelector("#capture")).then(canvas => {
    document.body.appendChild(canvas)
});

<script src="https://html2canvas.hertzen.com/dist/html2canvas.min.js"></script>

npm install --save html2canvas

yarn add html2canvas