<input-type="file">accept属性列表

在上传文件的时候，需要限制指定的文件类型。 <input type="file" accept="image/*" /> accept表示可以上传文件类型，image表示图片，*表示所有支持的格式。

accept可以指定如下信息：#

*.3gpp  audio/3gpp, video/3gpp  3GPP Audio/Video
*.ac3   audio/ac3   AC3 Audio
*.asf   allpication/vnd.ms-asf  Advanced Streaming Format
*.au    audio/basic AU Audio
*.css   text/css    Cascading Style Sheets
*.csv   text/csv    Comma Separated Values
*.doc   application/msword  MS Word Document
*.dot   application/msword  MS Word Template
*.dtd   application/xml-dtd Document Type Definition
*.dwg   image/vnd.dwg   AutoCAD Drawing Database
*.dxf   image/vnd.dxf   AutoCAD Drawing Interchange Format
*.gif   image/gif   Graphic Interchange Format
*.htm   text/html   HyperText Markup Language
*.html  text/html   HyperText Markup Language
*.jp2   image/jp2   JPEG-2000
*.jpe   image/jpeg  JPEG
*.jpeg  image/jpeg  JPEG
*.jpg   image/jpeg  JPEG
*.js    text/javascript, application/javascript JavaScript
*.json  application/json    JavaScript Object Notation
*.mp2   audio/mpeg, video/mpeg  MPEG Audio/Video Stream, Layer II
*.mp3   audio/mpeg  MPEG Audio Stream, Layer III
*.mp4   audio/mp4, video/mp4    MPEG-4 Audio/Video
*.mpeg  video/mpeg  MPEG Video Stream, Layer II
*.mpg   video/mpeg  MPEG Video Stream, Layer II
*.mpp   application/vnd.ms-project  MS Project Project
*.ogg   application/ogg, audio/ogg  Ogg Vorbis
*.pdf   application/pdf Portable Document Format
*.png   image/png   Portable Network Graphics
*.pot   application/vnd.ms-powerpoint   MS PowerPoint Template
*.pps   application/vnd.ms-powerpoint   MS PowerPoint Slideshow
*.ppt   application/vnd.ms-powerpoint   MS PowerPoint Presentation
*.rtf   application/rtf, text/rtf   Rich Text Format
*.svf   image/vnd.svf   Simple Vector Format
*.tif   image/tiff  Tagged Image Format File
*.tiff  image/tiff  Tagged Image Format File
*.txt   text/plain  Plain Text
*.wdb   application/vnd.ms-works    MS Works Database
*.wps   application/vnd.ms-works    Works Text Document
*.xhtml application/xhtml+xml   Extensible HyperText Markup Language
*.xlc   application/vnd.ms-excel    MS Excel Chart
*.xlm   application/vnd.ms-excel    MS Excel Macro
*.xls   application/vnd.ms-excel    MS Excel Spreadsheet
*.xlt   application/vnd.ms-excel    MS Excel Template
*.xlw   application/vnd.ms-excel    MS Excel Workspace
*.xml   text/xml, application/xml   Extensible Markup Language
*.zip   aplication/zip  Compressed Archive