dom-to-image插件网页生成截图保存下载

2021-09-24

2,660次阅读

一开始是用html2canvas，发现满足不了需求。于是朋友推荐我用dom-to-image

引用<script src="https://cdn.bootcdn.net/ajax/libs/dom-to-image/2.6.0/dom-to-image.min.js"></script>

演示代码

<html lang="en">
<head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>

    <style>
        table {
            width: 200px;
            border-collapse: collapse;
            border: 1px solid black;
        }
        tr {
            background: green;
        }
    </style>

    <script src="https://cdn.bootcdn.net/ajax/libs/dom-to-image/2.6.0/dom-to-image.min.js"></script>
</head>
<body>
<input type="button" onclick="saveImage()" value="保存图片" />

<table id="table">
    <tr>
        <td rowspan="3">200</td>
        <td>200</td>
        <td>300</td>
    </tr>
    <tr>
        <td rowspan="2">500</td>
        <td>600</td>
    </tr>
    <tr>
        <td>600</td>
    </tr>
</table>

<script>
    function filter (node) {
        return !(/\bno-pic\b/.test(node.className))
    }
    function saveImage() {
        $('.myqrcode .button').hide()
        domtoimage.toPng(document.getElementById("myqrcode"), {filter: filter})
            .then(function (dataUrl) {
                var link = document.createElement("a");
                link.download = "my-image-name.jpeg";
                link.href = dataUrl;
                link.click();
                $('.myqrcode .button').show()
            });
    }
</script>
</body>
</html>

正文完

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