如何在HTML5中验证只允许在'input type ="文件中''' JPG,GIF还是PNG? [英] How to validade in HTML5 to only allow in 'input type="file"' JPG, GIF or PNG?
问题描述
可能重复:
使用< input type =“ file”>?时限制文件格式
我需要使用HTML5 模式
属性来仅允许< input type =file>
元素。
I need to use the HTML5 pattern
attribute to only allow JPG, GIF and PNG files in a <input type="file">
element.
我目前有这种模式,但它不起作用:
I currently have this pattern, but it is not working:
<input type="file" class="input-file" id="tbinstUploadFile0" name="tbinstUploadFile0" placeholder="Please insert an image file..." pattern="([^\s]+(\.(?i)(jpg|png|gif|bmp))$)">
此正则表达式模式与HTML5不兼容?如何测试有效的HTML5正则表达式模式?
This regex pattern is not compatible with HTML5? How can I test for valid HTML5 regex patterns?
最好的问候,
推荐答案
尝试类似
<input type="file" name="my-image" id="image" accept="image/gif, image/jpeg, image/png" />
现场演示此处
要仅选择图像文件,您可以使用此 accept =image / *
To select only image files, you can use this accept="image/*"
<input type="file" name="my-image" id="image" accept="image/*" />
现场演示此处
< img src =https://i.stack.imgur.com/FWFiw.pngalt =只显示gif,jpg和png,从Chrome版本44获取屏幕>
仅限将显示gif,jpg和png,从Chrome版本44屏幕抓取
Only gif, jpg and png will be shown, screen grab from Chrome version 44
这篇关于如何在HTML5中验证只允许在'input type ="文件中''' JPG,GIF还是PNG?的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持IT屋!