Попробуйте следующим образом: точная HTML-таблица будет скопирована в буфер обмена, который можно напрямую вставить в электронную таблицу.
var tableToExcel = (function() {
var uri = 'data:application/vnd.ms-excel;base64,',
template = '<html xmlns:o="urn:schemas-microsoft-com:office:office" xmlns:x="urn:schemas-microsoft-com:office:excel" xmlns="http://www.w3.org/TR/REC-html40"><head><!--[if gte mso 9]><xml><x:ExcelWorkbook><x:ExcelWorksheets><x:ExcelWorksheet><x:Name>{worksheet}</x:Name><x:WorksheetOptions><x:DisplayGridlines/></x:WorksheetOptions></x:ExcelWorksheet></x:ExcelWorksheets></x:ExcelWorkbook></xml><![endif]--></head><body><table>{table}</table></body></html>',
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(table, name) {
if (!table.nodeType) table = document.getElementById(table)
var ctx = {
worksheet: name || 'Worksheet',
table: table.innerHTML
}
copyToClipboard(format(template, ctx));
console.log('Text copied to clipboard');
//window.location.href = uri + base64(format(template, ctx))
}
})()
function copyToClipboard(text) {
var dummy = document.createElement("input");
document.body.appendChild(dummy);
dummy.setAttribute('value', text);
dummy.select();
document.execCommand("copy");
document.body.removeChild(dummy);
}
<input type="button" onclick="tableToExcel('testTable', 'W3C Example Table')" value="Copy Table Text">
<table id="testTable" summary="Code page support in different versions of MS Windows." rules="groups" frame="hsides" border="2">
<caption>CODE-PAGE SUPPORT IN MICROSOFT WINDOWS</caption>
<colgroup align="center"></colgroup>
<colgroup align="left"></colgroup>
<colgroup span="2" align="center"></colgroup>
<colgroup span="3" align="center"></colgroup>
<thead valign="top">
<tr>
<th>Code-Page<br>ID</th>
<th>Name</th>
<th>ACP</th>
<th>OEMCP</th>
<th>Windows<br>NT 3.1</th>
<th>Windows<br>NT 3.51</th>
<th>Windows<br>95</th>
</tr>
</thead>
<tbody>
<tr>
<td>1200</td>
<td style="background-color: #00f; color: #fff">Unicode (BMP of ISO/IEC-10646)</td>
<td></td>
<td></td>
<td>X</td>
<td>X</td>
<td>*</td>
</tr>
<tr>
<td>1250</td>
<td style="font-weight: bold">Windows 3.1 Eastern European</td>
<td>X</td>
<td></td>
<td>X</td>
<td>X</td>
<td>X</td>
</tr>
<tr>
<td>1251</td>
<td>Windows 3.1 Cyrillic</td>
<td>X</td>
<td></td>
<td>X</td>
<td>X</td>
<td>X</td>
</tr>
<tr>
<td>1252</td>
<td>Windows 3.1 US (ANSI)</td>
<td>X</td>
<td></td>
<td>X</td>
<td>X</td>
<td>X</td>
</tr>
<tr>
<td>1253</td>
<td>Windows 3.1 Greek</td>
<td>X</td>
<td></td>
<td>X</td>
<td>X</td>
<td>X</td>
</tr>
<tr>
<td>1254</td>
<td>Windows 3.1 Turkish</td>
<td>X</td>
<td></td>
<td>X</td>
<td>X</td>
<td>X</td>
</tr>
<tr>
<td>1255</td>
<td>Hebrew</td>
<td>X</td>
<td></td>
<td></td>
<td></td>
<td>X</td>
</tr>
<tr>
<td>1256</td>
<td>Arabic</td>
<td>X</td>
<td></td>
<td></td>
<td></td>
<td>X</td>
</tr>
</tbody>
</table>