js实现一键导出Excel

时间：2023-03-09 19:49:30
js实现一键导出Excel

演示地址：https://xibushijie.github.io/static/ExportToExcel.html

<!DOCTYPE html>

<html lang="en">

<head>

    <meta charset="UTF-8">

    <title>js实现一键导出Excel</title>

</head>

<body>

    <div class="container">

        <table id="backViewTable" class="table table-hover table-sm table2excel">

            <tr>

                <td>#</td>

                <td>ID</td>

                <td>姓名</td>

                <td>座位号</td>

                <td>操作</td>

            </tr>

            <tr>

                <th scope="row">1</th>

                <td>1234</td>

                <td>李文斐</td>

                <td>2楼 3排 34号 </td>

                <td><input class="btn-primary" type="button" value="删除"/></td>

            </tr>

            <tr>

                <th scope="row">2</th>

                <td>2345</td>

                <td>lwf</td>

                <td>1楼 3排 34号</td>

                <td><input class="btn-primary" type="button" value="删除"/></td>

            </tr>

            <tr>

                <th scope="row">3</th>

                <td>3456</td>

                <td>Lee</td>

                <td>1楼 3排 12号</td>

                <td><input class="btn-primary" type="button" value="删除"/></td>

            </tr>

        </table>

        <button class="btn btn-primary btn-sm" onclick="tablesToExcel(['backViewTable'], ['ProductDay1'], 'TestBook.xls', 'Excel')">Export to Excel</button>

    </div>

</body>

<script>

    var tablesToExcel = (function() {

        var uri = 'data:application/vnd.ms-excel;base64,'

            , tmplWorkbookXML = '<?xml version="1.0"?><?mso-application progid="Excel.Sheet"?><Workbook xmlns="urn:schemas-microsoft-com:office:spreadsheet" xmlns:ss="urn:schemas-microsoft-com:office:spreadsheet">'

            + '<DocumentProperties xmlns="urn:schemas-microsoft-com:office:office"><Author>Axel Richter</Author><Created>{created}</Created></DocumentProperties>'

            + '<Styles>'

            + '<Style ss:ID="Currency"><NumberFormat ss:Format="Currency"></NumberFormat></Style>'

            + '<Style ss:ID="Date"><NumberFormat ss:Format="Medium Date"></NumberFormat></Style>'

            + '</Styles>'

            + '{worksheets}</Workbook>'

            , tmplWorksheetXML = '<Worksheet ss:Name="{nameWS}"><Table>{rows}</Table></Worksheet>'

            , tmplCellXML = '<Cell{attributeStyleID}{attributeFormula}><Data ss:Type="{nameType}">{data}</Data></Cell>'

            , base64 = function(s) { return window.btoa(unescape(encodeURIComponent(s))) }

            , format = function(s, c) { return s.replace(/{(\w+)}/g, function(m, p) { return c[p]; }) }

        return function(tables, wsnames, wbname, appname) {

            var ctx = "";

            var workbookXML = "";

            var worksheetsXML = "";

            var rowsXML = "";

            for (var i = 0; i < tables.length; i++) {

                if (!tables[i].nodeType) tables[i] = document.getElementById(tables[i]);

                //控制要导出的行数

                for (var j = 0; j < tables[i].rows.length; j++) {

                    rowsXML += '<Row>';

                //控制导出的列数（在本例中，最后一列为button,导出的文件会出错，所以导出到倒数第二列

                    for (var k = 0; k < tables[i].rows[j].cells.length-1; k++) {

                        var dataType = tables[i].rows[j].cells[k].getAttribute("data-type");

                        var dataStyle = tables[i].rows[j].cells[k].getAttribute("data-style");

                        var dataValue = tables[i].rows[j].cells[k].getAttribute("data-value");

                        dataValue = (dataValue)?dataValue:tables[i].rows[j].cells[k].innerHTML;

                        var dataFormula = tables[i].rows[j].cells[k].getAttribute("data-formula");

                        dataFormula = (dataFormula)?dataFormula:(appname=='Calc' && dataType=='DateTime')?dataValue:null;

                        ctx = {  attributeStyleID: (dataStyle=='Currency' || dataStyle=='Date')?' ss:StyleID="'+dataStyle+'"':''

                            , nameType: (dataType=='Number' || dataType=='DateTime' || dataType=='Boolean' || dataType=='Error')?dataType:'String'

                            , data: (dataFormula)?'':dataValue

                            , attributeFormula: (dataFormula)?' ss:Formula="'+dataFormula+'"':''

                        };

                        rowsXML += format(tmplCellXML, ctx);

                    }

                    rowsXML += '</Row>'

                }

                ctx = {rows: rowsXML, nameWS: wsnames[i] || 'Sheet' + i};

                worksheetsXML += format(tmplWorksheetXML, ctx);

                rowsXML = "";

            }

            ctx = {created: (new Date()).getTime(), worksheets: worksheetsXML};

            workbookXML = format(tmplWorkbookXML, ctx);

            // 查看后台的打印输出

            console.log(workbookXML);

            var link = document.createElement("A");

            link.href = uri + base64(workbookXML);

            link.download = wbname || 'Workbook.xls';

            link.target = '_blank';

            document.body.appendChild(link);

            link.click();

            document.body.removeChild(link);

        }

    })();

    </script>

</html>

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