Diễn đàn hỗ trợ Firefox

Imagine that I'm on a website like example.com and I click a button. Looking at my browser's network tab, I can see that the page has sent a POST request to example.com with some data and received some data back from the server.

I want to be able to:

• Edit the data before it is sent to the server.
• Edit the response data before it is handled by the function.

I'm aware of Firefox's "edit and resend" feature, but I want to tamper with the very first request before it reaches the server.

I've been searching for this for hours but all of the answers appear to be outdated due to browser updates. What is the modern approach to doing this?

I want to hide scrollbar in web mozila browser using css but not add overflow:hidden. I have created 3 level vertical menu and each leave have separate column so i can't use overflow:hidden because if I will add overflow:hidden then my second and third level menu not visible.

My Firefox Developer shows "no element selected" under Inspector after refreshing the browser for few times.

Update on 8th September

The issue always happen on Mobile Responsive Mode, I tried to uninstall all the extension but it does not help.

I don't think it is my computer issue because my office computer runs into the same problem as well.

Is this a bug?

I attached one image file for better understanding.

Thank you.

My application works on mozilla firefox 3.0.11 and i tried to install this firefox version on RHEL 7.4, since it is working fine on RHEL7.3, but now on RHEL 7.4 it is taking to long time for login page, after that it works fine, we have a ipfinder tool that works in login time, it is taking too long in ip finder, please help me.

I have installed some of RHEL libraries for running this older version on RHEL 7.3, and same i have done on rhel 7.4 but it is taking too long please provide us a solution or diagnose our problem.

Hi

I am using the latest firefox version on windows 10. After the installation, I am not able to see h264 cisco codec getting enabled. I searched on the internet and found that there were few issues in the earlier releases but later they were fixed.

But on the current release I still see the problem

Can you please help to resolve the issue?

Many thanks in advance Pankaj Hirlekar

web pages used to run. Still run in Chrome. Only problem is with the local webpages. Now message at bottom reads:

Waiting for 192.168.0.159 // That's the web server address which I'm currently trying to test on.

Have already tried in about:config test.currentTimeOffsetSeconds;11491200

I have written a web program in html which displays perfectly on computers using MS XP and Linux systems using Firefox and Opera browsers. But when used on a computer using the MS 10 operating system and Firefox, page background colours/colors are not displayed. Would someone be kind enough to tell me how to fix this ?

Visual Studio 2017 and using FF Developer for debugging. As off some time this weekend I get this error message.

Worked fine last week.

My local webconfig has the redirect to HTTPS rule disabled. So I am going to localhost, at least not with FF Developer or regular FF has the same error.

Works fine on Chrome and Opera.

Note: I control the server. The following is noted on the client:

Your connection is not secure

The owner of [myDomain] has configured their website improperly. To protect your information from being stolen, Firefox has not connected to this website.

And yet, an online cert checker states: Congratulations! This certificate is correctly installed.

So, the obvious answer is it's a caching problem. I found 2 cookies from the old domain that I deleted and then cleared the cache. No luck. *Yes, old domain as I now have a new domain. It sees the old cert for the old domain, which I have revoked and deleted with "certbot revoke". Using Letsencrypt on ubuntu 16.04

Thank you in advance for any help!

I am using 60.1.0esr and try to click on a <button> element where no text has been defined between <button></button>. Using 52.2.0 esr the button is clickable. Do I miss something?

Hello, I am involved in developing an application that uses WebRTC for video calling.

Prior to yesterday my FF browser was at version 61.0.2 and the application could make video calls between FF / Chrome and apps running on Android and iOS

Today, I was unable to make calls to/from FF 62.0. Calls made using Chrome to Chrome work fine. Two colleagues were also able to make calls with older FF 61.0.2 and then no longer, after upgrading to FF 62.0

We are using the PeerJS library

What WebRTC related changes have been implemented between 61.0.2 and 62.0?

Thank you

List of cities with borders around individual city names is wrapping incorrectly. See screenshot and forum thread trying to resolve it.

• https://community.wikia.com/wiki/Thread:1514021
• https://community.wikia.com/wiki/Thread:1514021?file=Wrapping_problem.gif

The wrapping problem does not occur in the other browsers I have tried. I also looked at the page in Explorer and Edge. No problems there. I do not have Chrome installed. Look at these examples:

• http://cannabis.shoutwiki.com/wiki/User:Timeshifter/Sandbox17
• http://cannabis.shoutwiki.com/wiki/2018_Global_Marijuana_March_and_420_event_map#Germany

Narrow your browser window until you see the problem in Firefox.

I am updating some css code on my Wordpress website. When I update the code I see the change on all internet browsers EXCEPT for Firefox. I know all about emptying cache and cookies and history and that is not it. I have opened the website on computers that have never even been to the site and it is still pulling my old css code! Now, I was making some changes last night and Firefix wasn't updating the ocde, but when I looked at it this morning the changes were there. Does the changes take longer to reach FIrefox browsers or something? I am not the MOST savvy web designer, hence the Wordpress website, but I have changed my css code a thousand times and I always see the updates on other browsers. Please let me know if it is a "delay" thing with changes to Firefox or if I need to add some sort of special Firefox code to the css.

Appreciate the help and I apologize if I am just a missing something easy.

Hi,

the css animation of the svg:circle looks weird. It seems that the size of the bbox does not follow the size of the circle itself. As a result the circle from time to time is cut at borders. I have not faced this problem with other browsers. The problems seems to appear on Windows 7/10 only. On Mac this looks better.

https://jsfiddle.net/j974Lkq8/

https://jsfiddle.net/dnvaw7to/

When I use SVG animation all is fine. https://jsfiddle.net/gex5rL3o/

Regards, Maciej

After the 61.0.1 update, our website now only shows mobile view stacking within a desktop browser view. The card elements (see example) should only reduce in columns at tablet and mobile breakpoints. This function continues to work in all recent Chrome, Edge, Opera and I.E browsers.

Example: https://www.gigmasters.com/services/wedding-dj

Hi, I have win7pro 864) and I run "FF quantum 62.0 - 32 bit"

I'm really struggling with Windows Media Player plugin for FF: I downloaded and installed the latest version (1.0.0.8 is it?) but it doesn't work...

Indeed I cannot see it within the installed plugins and if I try to "install by file (np-mswmp.dll)" it gets me an error of file corruption...

I really don't know what to do anymore...Where can I download it?

thanks a lot!

I am working on building up a virtual VM with VM Horizon. We are loading Firefox into an Appstack. I loaded our root certs in the apps stack as I was building the app, however when I load the appstack to the virtual the certs are not listed. I know this is from the fact that the certs are being loaded into the admin profile that I install. My question is how do I get the certs to load for all users that sign into the virtual environment? I am fine if it is loaded into the Core VM and not the appstack where Firefox is actually installed. Anything that I am seeing is for older versions of Firefox and not the current in a Windows 10 x64 environment.

Thank you!

I am testing with a SAN certificate shown at the bottom -- The CN is gvm and contains the SANs 172.28.242.30, 172.28.242.28, 172.28.242.25, 172.28.242.24, 172.28.242.29, 172.28.242.30, 172.28.242.28, 172.28.242.25, 172.28.242.24, 172.28.242.29, 172.28.242.30, cem, cmtg, gsec.ott7gvm1.genband.com, gvm, gvweb.ott7gvm1.genband.com.

When I access my website using Firefox 62.4 (on WIndows 8.1) and URL https://172.28.242.25:2443, I get the login page without any warnings. However, using https://gsec.ott7gvm1.genband.com:2443 results in the following warning -- Note that other browsers, IE and Chrome works without this warning.

gsec.ott7gvm1.genband.com:2443 uses an invalid security certificate.

The certificate is only valid for the following names: 172.28.242.30, 172.28.242.28, 172.28.242.25, 172.28.242.24, 172.28.242.29, 172.28.242.30, 172.28.242.28, 172.28.242.25, 172.28.242.24, 172.28.242.29, 172.28.242.30, cem, cmtg, gsec.ott7gvm1.genband.com, gvm, gvweb.ott7gvm1.genband.com Error code: SSL_ERROR_BAD_CERT_DOMAIN

I am at a loss to understand the root cause of this issue . I tried uninstalling / re-installing Firefox and renaming cert9.db with much luck.

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I was wondering if there way a way to override Firefox's default JS memory limit per tab? Right now, upon reaching about 4-5GB of memory usage, my JS console window reports an our of memory error and dumps my code. I appreciate that this is pretty normal behavior, as 4GB of memory is fairly outlandish for a website. However, for the use case of VR, particularly in physics engine development, it can feel a bit restrictive and even silly when I have 32GB sitting idle - and I could readily double that to 64. However, I know Firefox has a rather extensive about:config section - and I was wondering if anyone knew if one of these variables allowed us to override the internal limits of the browsers memory limitations?