- A+
<input type="file">
使用 type="file" 的 <input> 元素使得用户可以选择一个或多个元素以提交表单的方式上传到服务器上，或者通过 Javascript 的 File API 对文件进行操作。
常见 MIME 类型列表
这是一份 MIME 类型列表，以及各个类型的文档类别，按照它们的常见扩展名排序。
两种主要的 MIME 类型在默认类型中扮演了重要的角色：
text/plain 表示文本文件的默认值。一个文本文件应当是人类可读的，并且不包含二进制数据。
application/octet-stream 表示所有其他情况的默认值。一种未知的文件类型应当使用此类型。浏览器在处理这些文件时会特别小心, 试图防止、避免用户的危险行为.
IANA 是 MIME 媒体类型的官方注册机构，并维护了 list of all the official MIME types。下面的表格列出了 Web 上的一些重要 MIME 类型:
扩展名 文档类型 MIME 类型
.aac AAC audio audio/aac
.abw AbiWord document application/x-abiword
.arc Archive document (multiple files embedded) application/x-freearc
.avi AVI: Audio Video Interleave video/x-msvideo
.azw Amazon Kindle eBook format application/vnd.amazon.ebook
.bin Any kind of binary data application/octet-stream
.bmp Windows OS/2 Bitmap Graphics image/bmp
.bz BZip archive application/x-bzip
.bz2 BZip2 archive application/x-bzip2
.csh C-Shell script application/x-csh
.css Cascading Style Sheets (CSS) text/css
.csv Comma-separated values (CSV) text/csv
.doc Microsoft Word application/msword
.docx Microsoft Word (OpenXML) application/vnd.openxmlformats-officedocument.wordprocessingml.document
.eot MS Embedded OpenType fonts application/vnd.ms-fontobject
.epub Electronic publication (EPUB) application/epub+zip
.gif Graphics Interchange Format (GIF) image/gif
.htm
.html HyperText Markup Language (HTML) text/html
.ico Icon format image/vnd.microsoft.icon
.ics iCalendar format text/calendar
.jar Java Archive (JAR) application/java-archive
.jpeg
.jpg JPEG images image/jpeg
.js JavaScript text/javascript
.json JSON format application/json
.jsonld JSON-LD format application/ld+json
.mid
.midi Musical Instrument Digital Interface (MIDI) audio/midi audio/x-midi
.mjs JavaScript module text/javascript
.mp3 MP3 audio audio/mpeg
.mpeg MPEG Video video/mpeg
.mpkg Apple Installer Package application/vnd.apple.installer+xml
.odp OpenDocument presentation document application/vnd.oasis.opendocument.presentation
.ods OpenDocument spreadsheet document application/vnd.oasis.opendocument.spreadsheet
.odt OpenDocument text document application/vnd.oasis.opendocument.text
.oga OGG audio audio/ogg
.ogv OGG video video/ogg
.ogx OGG application/ogg
.otf OpenType font font/otf
.png Portable Network Graphics image/png
.pdf Adobe Portable Document Format (PDF) application/pdf
.ppt Microsoft PowerPoint application/vnd.ms-powerpoint
.pptx Microsoft PowerPoint (OpenXML) application/vnd.openxmlformats-officedocument.presentationml.presentation
.rar RAR archive application/x-rar-compressed
.rtf Rich Text Format (RTF) application/rtf
.sh Bourne shell script application/x-sh
.svg Scalable Vector Graphics (SVG) image/svg+xml
.swf Small web format (SWF) or Adobe Flash document application/x-shockwave-flash
.tar Tape Archive (TAR) application/x-tar
.tif
.tiff Tagged Image File Format (TIFF) image/tiff
.ttf TrueType Font font/ttf
.txt Text, (generally ASCII or ISO 8859-n) text/plain
.vsd Microsoft Visio application/vnd.visio
.wav Waveform Audio Format audio/wav
.weba WEBM audio audio/webm
.webm WEBM video video/webm
.webp WEBP image image/webp
.woff Web Open Font Format (WOFF) font/woff
.woff2 Web Open Font Format (WOFF) font/woff2
.xhtml XHTML application/xhtml+xml
.xls Microsoft Excel application/vnd.ms-excel
.xlsx Microsoft Excel (OpenXML) application/vnd.openxmlformats-officedocument.spreadsheetml.sheet
.xml XML application/xml 代码对普通用户来说不可读 (RFC 3023, section 3)
text/xml 代码对普通用户来说可读 (RFC 3023, section 3)
.xul XUL application/vnd.mozilla.xul+xml
.zip ZIP archive application/zip
.3gp 3GPP audio/video container video/3gpp
audio/3gpp（若不含视频）
.3g2 3GPP2 audio/video container video/3gpp2
audio/3gpp2（若不含视频）
.7z 7-zip archive application/x-7z-compressed
