export HTML table to excel javascript
1.export.html
<!DOCTYPE html>
<html lang="en">
<head>
<title>Export Example Excel</title>
<meta charset="utf-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/css/bootstrap.min.css">
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.5.1/jquery.min.js"></script>
<script src="https://maxcdn.bootstrapcdn.com/bootstrap/3.4.1/js/bootstrap.min.js"></script>
</head>
<body>
<div class="container">
<h2>Export Excel</h2>
<p>Contextual classes can be used to color table rows or table cells. The classes that can be used are: .active, .success, .info, .warning, and .danger.</p>
<table id="tbl1" class="table">
<thead>
<tr>
<th>Firstname</th>
<th>Lastname</th>
<th>Email</th>
</tr>
</thead>
<tbody>
<tr>
<td>Default</td>
<td>Defaultson</td>
<td>def@somemail.com</td>
</tr>
<tr class="success">
<td>Success</td>
<td>Doe</td>
<td>john@example.com</td>
</tr>
<tr class="danger">
<td>Danger</td>
<td>Moe</td>
<td>mary@example.com</td>
</tr>
<tr class="info">
<td>Info</td>
<td>Dooley</td>
<td>july@example.com</td>
</tr>
<tr class="warning">
<td>Warning</td>
<td>Refs</td>
<td>bo@example.com</td>
</tr>
<tr class="active">
<td>Active</td>
<td>Activeson</td>
<td>act@example.com</td>
</tr>
</tbody>
</table>
<button onclick="tablesToExcel(['tbl1'], ['Sheet1'], 'export.xls', 'Excel')" class="btn btn-success">Export to Excel</button>
</div>
<!-- export js -->
<script src="exportToExcel.js"></script>
</body>
</html>2.exportjs
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]);
for (var j = 0; j < tables[i].rows.length; j++)
{
rowsXML += '<Row>'
for (var k = 0; k < tables[i].rows[j].cells.length; 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);
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);
}
})();
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