上传类型

可以直接设置 input 标签的 accept 属性来限制上传文件的类型

<input type="file" accept="application/msword" />

accept 属性列表

1. accept="application/msexcel"
2. accept="application/msword"
3. accept="application/pdf"
4. accept="application/poscript"
5. accept="application/rtf"
6. accept="application/x-zip-compressed"
7. accept="audio/basic"
8. accept="audio/x-aiff"
9. accept="audio/x-mpeg"
10. accept="audio/x-pn/realaudio"
11. accept="audio/x-waw"
12. accept="image/gif"
13. accept="image/jpeg"
14. accept="image/tiff"
15. accept="image/x-ms-bmp"
16. accept="image/x-photo-cd"
17. accept="image/x-png"
18. accept="image/x-portablebitmap"
19. accept="image/x-portable-greymap"
20. accept="image/x-portable-pixmap"
21. accept="image/x-rgb"
22. accept="text/html"
23. accept="text/plain"
24. accept="video/quicktime"
25. accept="video/x-mpeg2"
26. accept="video/x-msvideo"

如果限制上传的文件为图片格式，则可以直接写成：accept = 'image/\*'；