HTML：如何限制文件上传只能是图片？ [英] HTML: How to limit file upload to be only images?

问题描述

用HTML，我怎么限制可以上传什么样的文件类型？为了简化用户体验，我想限制文件上传只能是图片（jpeg，gif，png）。

 < form method =postaction =...enctype =multipart / form-data> 
< label for =image>照片< / label> 
< input name =imagetype =file/> 
< / form> 
  

解决方案

HTML5表示< input type =fileaccept =image / *> 。当然，永远不要相信客户端验证：总是在服务器端再次检查...

With HTML, how do I limit what kind of filetypes can be uploaded?

To easy the user experience, I want to limit file uploads to be only images (jpeg, gif, png).

<form method="post" action="..." enctype="multipart/form-data">
<label for="image">Photo</label>
<input name="image" type="file" />
</form>

解决方案

HTML5 says <input type="file" accept="image/*">. Of course, never trust client-side validation: Always check again on the server-side...

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