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>