HTML: Form upload, only allow PNG, GIF & JPG

Posted by Teddy on Stack Overflow See other posts from Stack Overflow or by Teddy
Published on 2010-06-16T00:40:14Z Indexed on 2010/06/16 0:42 UTC
Read the original article Hit count: 313

Filed under:

html

|

forms

|

upload

I have a form file upload. When the users goes to upload an image, it displays all files on their computer. How can I make the HTML upload dialog window to only display JPG, GIF and PNGs?

© Stack Overflow or respective owner

Related posts about html

Install usblib package - Ubuntu

as seen on Ask Ubuntu - Search for 'Ask Ubuntu'
I need the package libusb for another package I am installing. I tried the following which seemed to install the package, sudo apt-get install libusb-dev but when I try to install the other package I get, configure: error: Package requirements (libusb-1.0 >= 0.9.1) were not met: No package… >>> More
Prevent malicious vulnerability scan increasing load on a server

as seen on Server Fault - Search for 'Server Fault'
Hi all, this week we have been suffering some malicious vulnerability scans to our servers, increasing the load on them, making them nearly unusable. The attack is easy to defend, just blocking the offending ip, but only after discovering it. Is there any form of prevent it? Is it normal that… >>> More
can't install psycopg2 in my env on mac os x lion

as seen on Server Fault - Search for 'Server Fault'
I tried install psycopg2 via pip in my virtual env, but got this error: ld: library not found for -lpq (full log here: http://pastebin.com/XdmGyJ4u ) I tried install postgres 9.1 from .dmg and via port, (gksks)iMac-Alexander:~ lorddaedra$ locate libpq /Developer/SDKs/MacOSX10.7.sdk/usr/include/libpq /Developer/SDKs/MacOSX10… >>> More
Bitnami redmine error SVN

as seen on Server Fault - Search for 'Server Fault'
I'm installing the Bitnami Redmine stack (redmine + subversion). Firstly I install configure and test it locally (Ubuntu 14.04 LTS). And everything is OK. I install Bitnami stack on server (Red Hat 4.4.7-4) and configure SVN. I commit files into SVN and connect project into Redmine with SVN repository… >>> More
Can the .htaccess file slow down a website to a crawl? If so, are there better ways to solve these problems with different rewrite rules and such?

as seen on Pro Webmasters - Search for 'Pro Webmasters'
here is my htaccess file...... RewriteCond %{REQUEST_URI} ^/patients/billing/FAQ_billing\.html$ [OR] RewriteCond %{REQUEST_URI} ^/patients/billing/getintouch\.html$ RewriteRule ^patients/billing/(.*)\.html$ $1.php [L,NC] RewriteCond %{REQUEST_URI} ^/patients/findadoctor/a\.html$ [OR] RewriteCond… >>> More

Related posts about forms

Designer issue in VS: Events cannot be set on the object passed to the event binding service ...

as seen on Stack Overflow - Search for 'Stack Overflow'
I have a little problem: the Winform control (that contains between others WPF) suddenly stopped to be displayed in Designer. Message: Events cannot be set on the object passed to the event binding service because a site associated with the object could not be located. Call Stack: … >>> More
Winforms TabControl causing spurious Paint events for UserControl

as seen on Stack Overflow - Search for 'Stack Overflow'
For our project, we've written a WinForms UserControl for graphing. We're seeing some strange behavior when our control is sited in a TabControl - our control continuously fires Paint events, even when there is absolutely no activity by the user. We only see this in the TabControl. When we site… >>> More
C# Gui setting control.Enabled to false fires OnClick event???

as seen on Stack Overflow - Search for 'Stack Overflow'
For some really weird reason when i set the .Enabled property to false on a simple text box on a small GUI, it fires a radio buttons OnClick event and its causing lots of problems. I have breakpointed the txtBox.Enabled = false; and after stepping over OR into it i jump straight to the OnClick event… >>> More
Django's forms.Form vs forms.ModelForm

as seen on Stack Overflow - Search for 'Stack Overflow'
Could anyone please explain to me similarities and differences of Django's forms.Form & forms.ModelForm? I've used Django for 4 days, so excuse me if I don't know basic things. Thanks in advance! >>> More
C#.NET Forms programing - Modal and Non-Modal forms problem

as seen on Stack Overflow - Search for 'Stack Overflow'
Hello, I have a problem with modality of the forms under C#.NET. Let's say I have main form #0 (see the image below). This form represents main application form, where user can perform various operations. However, from time to time, there is a need to open additional non-modal form to perform additional… >>> More