使用js-xlsx库,将表格table导出为Excel表格-蒲公英云

使用js-xlsx库,将表格table导出为Excel表格

npm install xlsjs

引入xlsx.full.min.js 和export.js

<body>
<button onclick="tableExport()">导出</button>
<table id="tables">
    <thead>
    <tr>
        <th>姓名</th>
        <th>学号</th>
    </tr>
    </thead>
    <tbody>
    <tr>
        <td>张三</td>
        <td>123456789</td>
    </tr>
    <tr>
        <td>李四</td>
        <td>123456788</td>
    </tr>
    </tbody>
    <tr>
        <td>王五</td>
        <td>123456787</td>
    </tr>
</table>
<script src="../assets/js/xlsx.full.min.js"></script>
<script src="../assets/js/export.js"></script>
<script type="text/javascript">
    function tableExport() {
        btn_export("tables","table导出表格")
    }
    function btn_export(id,filename) {
        let table1 = document.getElementById(id);
        let sheet = XLSX.utils.table_to_sheet(table1);//将一个table对象转换成一个sheet对象
        openDownloadDialog(sheet2blob(sheet), filename+'.xlsx');
    }
</script>
</body>

export.js

// 将一个sheet转成最终的excel文件的blob对象，然后利用URL.createObjectURL下载
function sheet2blob(sheet, sheetName) {
    sheetName = sheetName || 'sheet1';
    let workbook = {
        SheetNames: [sheetName],
        Sheets: {}
    };
    workbook.Sheets[sheetName] = sheet; // 生成excel的配置项
    let wopts = {
        bookType: 'xlsx', // 要生成的文件类型
        bookSST: false, // 是否生成Shared String Table，官方解释是，如果开启生成速度会下降，但在低版本IOS设备上有更好的兼容性
        type: 'binary'
    };
    let wbout = XLSX.write(workbook, wopts);
    let blob = new Blob([s2ab(wbout)], {
        type: "application/octet-stream"
    }); // 字符串转ArrayBuffer
    function s2ab(s) {
        let buf = new ArrayBuffer(s.length);
        let view = new Uint8Array(buf);
        for (let i = 0; i != s.length; ++i) view[i] = s.charCodeAt(i) & 0xFF;
        return buf;
    }
    return blob;
}
function openDownloadDialog(url, saveName) {
    if (typeof url == 'object' && url instanceof Blob) {
        url = URL.createObjectURL(url); // 创建blob地址
    }
    let aLink = document.createElement('a');
    aLink.href = url;
    aLink.download = saveName || ''; // HTML5新增的属性，指定保存文件名，可以不要后缀，注意，file:///模式下不会生效
    let event;
    if (window.MouseEvent) event = new MouseEvent('click');
    else {
        event = document.createEvent('MouseEvents');
        event.initMouseEvent('click', true, false, window, 0, 0, 0, 0, 0, false, false, false, false, 0, null);
    }
    aLink.dispatchEvent(event);
}