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>js实现一键导出Excel
原文地址：https://www.cnblogs.com/wangjae/p/9149307.html