<html>
<head>
<meta http-equiv="content-Type" content="text/html;charset=utf-8"/>
<script type="text/javascript">
function base64 (content) {
return window.btoa(unescape(encodeURIComponent(content)));
}
/*
*@tableId: table的Id
*@fileName: 要生成excel文件的名字（不包括后缀，可随意填写）
*/
function tableToExcel(tableID,fileName){
var table = document.getElementById(tableID);
var excelContent = table.innerHTML;
var excelFile = "<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'>";
excelFile += "<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>";
excelFile += "<body><table>";
excelFile += excelContent;
excelFile += "</table></body>";
excelFile += "</html>";
var link = "data:application/vnd.ms-excel;base64," + base64(excelFile);
var a = document.createElement("a");
a.download = fileName+".xls";
a.href = link;
a.click();
}
</script>
</head>
<body>
<button type="button" onclick="tableToExcel('item','data')">导出</button>
<table id="item">
<tr>
<th>编号</th>
<th>姓名</th>
<th>年龄</th>
</tr>
<tr>
<td>1</td>
<td>小明</td>
<td>19</td>
</tr>
<tr>
<td>2</td>
<td>小芳</td>
<td>20</td>
</tr>
<tr>
<td>3</td>
<td>大军</td>
<td>22</td>
</tr>
</table>
</body>
</html>
