html <input>设置上传文件类型为excel表格

html

<form>

 <input type="file" class="form-control form-control-file"accept=".csv, application/vnd.ms-excel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet" name="importFile" id="importFile">
</form>            

<!--For CSV files (.csv),use: 
.csv; For Excel Files 2003-2007 (.xls), use: application/vnd.ms-excel;
 For Excel Files 2010 (.xlsx), use: application/vnd.openxmlformats-officedocument.spreadsheetml.sheet -->
主要是：
accept=".csv, application/vnd.ms-excel, application/vnd.openxmlformats-officedocument.spreadsheetml.sheet"

结果：