*.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
input type =file accept =application/msword br br accept属性列表 br 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.ac1.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" 这个就可以实现选择具体的数据类型，但是有兼容问题，测试的时候只有Opera，Chrome能用，火狐和IE都不兼容。
