console 命令行工具 X clear

console

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

<div id='capture'>710*300</div>
<button>下载</button>

div {
    width: 710px;
    height: 300px;
    background: #cccccc;
    line-height: 300px;
    text-align: center;
    font-size:24px
}