accept属性设置 <input type="file" accept="image/*" />

accept属性设置 <input type="file" accept="image/*" />   限制单个或多个文件类型

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。
复制代码

[taBLE]
[tr][td]

文件类型

[/td][td]

写法

[/td][td]

解释

[/td][/tr]
[tr][td]

*.3gpp

[/td][td]

audio/3gpp, video/3gpp

[/td][td]

3GPP Audio/Video

[/td][/tr]
[tr][td]

*.ac3

[/td][td]

audio/ac3

[/td][td]

AC3 Audio

[/td][/tr]
[tr][td]

*.asf

[/td][td]

allpication/vnd.ms-asf

[/td][td]

Advanced Streaming Format

[/td][/tr]
[tr][td]

*.au

[/td][td]

audio/basic

[/td][td]

AU Audio

[/td][/tr]
[tr][td]

*.css

[/td][td]

text/css

[/td][td]

Cascading Style Sheets

[/td][/tr]
[tr][td]

*.csv

[/td][td]

text/csv

[/td][td]

Comma Separated Values

[/td][/tr]
[tr][td]

*.doc

[/td][td]

APPlication/msword

[/td][td]

MS Word Document

[/td][/tr]
[tr][td]

*.dot

[/td][td]

application/msword

[/td][td]

MS Word Template

[/td][/tr]
[tr][td]

*.dtd

[/td][td]

application/xml-dtd

[/td][td]

Document Type Definition

[/td][/tr]
[tr][td]

*.dwg

[/td][td]

image/vnd.dwg

[/td][td]

AutoCAD Drawing Database

[/td][/tr]
[tr][td]

*.dxf

[/td][td]

image/vnd.dxf

[/td][td]

AutoCAD Drawing Interchange Format

[/td][/tr]
[tr][td]

*.gif

[/td][td]

image/gif

[/td][td]

Graphic Interchange Format

[/td][/tr]
[tr][td]

*.htm

[/td][td]

text/html

[/td][td]

HyperText Markup Language

[/td][/tr]
[tr][td]

*.html

[/td][td]

text/html

[/td][td]

HyperText Markup Language

[/td][/tr]
[tr][td]

*.jp2

[/td][td]

image/jp2

[/td][td]

JPEG-2000

[/td][/tr]
[tr][td]

*.jpe

[/td][td]

image/jpeg

[/td][td]

JPEG

[/td][/tr]
[tr][td]

*.jpeg

[/td][td]

image/jpeg

[/td][td]

JPEG

[/td][/tr]
[tr][td]

*.jpg

[/td][td]

image/jpeg

[/td][td]

JPEG

[/td][/tr]
[tr][td]

*.js

[/td][td]

text/javascript, application/javascript

[/td][td]

JavaScript

[/td][/tr]
[tr][td]

*.json

[/td][td]

application/json

[/td][td]

JavaScript Object Notation

[/td][/tr]
[tr][td]

*.mp2

[/td][td]

audio/mpeg, video/mpeg

[/td][td]

MPEG Audio/Video Stream, Layer II

[/td][/tr]
[tr][td]

*.mp3

[/td][td]

audio/mpeg

[/td][td]

MPEG Audio Stream, Layer III

[/td][/tr]
[tr][td]

*.mp4

[/td][td]

audio/mp4, video/mp4

[/td][td]

MPEG-4 Audio/Video

[/td][/tr]
[tr][td]

*.mpeg

[/td][td]

video/mpeg

[/td][td]

MPEG Video Stream, Layer II

[/td][/tr]
[tr][td]

*.mpg

[/td][td]

video/mpeg

[/td][td]

MPEG Video Stream, Layer II

[/td][/tr]
[tr][td]

*.mpp

[/td][td]

application/vnd.ms-project

[/td][td]

MS Project Project

[/td][/tr]
[tr][td]

*.ogg

[/td][td]

application/ogg, audio/ogg

[/td][td]

Ogg Vorbis

[/td][/tr]
[tr][td]

*.pdf

[/td][td]

application/pdf

[/td][td]

Portable Document Format

[/td][/tr]
[tr][td]

*.png

[/td][td]

image/png

[/td][td]

Portable Network Graphics

[/td][/tr]
[tr][td]

*.pot

[/td][td]

application/vnd.ms-powerpoint

[/td][td]

MS PowerPoint Template

[/td][/tr]
[tr][td]

*.pps

[/td][td]

application/vnd.ms-powerpoint

[/td][td]

MS PowerPoint Slideshow

[/td][/tr]
[tr][td]

*.ppt

[/td][td]

application/vnd.ms-powerpoint

[/td][td]

MS PowerPoint Presentation

[/td][/tr]
[tr][td]

*.rtf

[/td][td]

application/rtf, text/rtf

[/td][td]

Rich Text Format

[/td][/tr]
[tr][td]

*.svf

[/td][td]

image/vnd.svf

[/td][td]

Simple Vector Format

[/td][/tr]
[tr][td]

*.tif

[/td][td]

image/tiff

[/td][td]

Tagged Image Format File

[/td][/tr]
[tr][td]

*.tiff

[/td][td]

image/tiff

[/td][td]

Tagged Image Format File

[/td][/tr]
[tr][td]

*.txt

[/td][td]

text/plain

[/td][td]

Plain Text

[/td][/tr]
[tr][td]

*.wdb

[/td][td]

application/vnd.ms-works

[/td][td]

MS Works Database

[/td][/tr]
[tr][td]

*.wps

[/td][td]

application/vnd.ms-works

[/td][td]

Works Text Document

[/td][/tr]
[tr][td]

*.xhtml

[/td][td]

application/xhtml+xml

[/td][td]

Extensible HyperText Markup Language

[/td][/tr]
[tr][td]

*.xlc

[/td][td]

application/vnd.ms-excel

[/td][td]

MS Excel Chart

[/td][/tr]
[tr][td]

*.xlm

[/td][td]

application/vnd.ms-excel

[/td][td]

MS Excel Macro

[/td][/tr]
[tr][td]

*.xls

[/td][td]

application/vnd.ms-excel

[/td][td]

MS Excel Spreadsheet

[/td][/tr]
[tr][td]

*.xlt

[/td][td]

application/vnd.ms-excel

[/td][td]

MS Excel Template

[/td][/tr]
[tr][td]

*.xlw

[/td][td]

application/vnd.ms-excel

[/td][td]

MS Excel Workspace

[/td][/tr]
[tr][td]

*.xml

[/td][td]

text/xml, application/xml

[/td][td]

Extensible Markup Language

[/td][/tr]
[tr][td]

*.zip

[/td][td]

aplication/zip

[/td][td]

Compressed Archive

[/td][/tr]
[/table]
示例我们要上传TXT
.txt结尾的所有文件
<input type="file" accept="text/plain" />

如果有多个，以“，”分割即可