htmlinput=file浏览时只显示指定文件类型xls、xlsx、csv_html/css_WEB-ITnose: Valid Accept Types: For CSV files (.csv), use: For Excel Files 2003-2007 (.xls), use: For Excel Files 2010 (.xlsx), use: For Text Files (.txt) use: For Image Files (.png/.jpg/etc), use: For HTML Files (.htm.html), use: