Search Support

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

Learn More

Lolu chungechunge lwabekwa kunqolobane. Uyacelwa ubuze umbuzo omusha uma udinga usizo.

How to create config preference via user.js file without manually editing through about:config portal?

  • 1 baphendule
  • 1 inale nkinga
  • 113 views
  • Igcine ukuphendulwa ngu CJ36

more options

I'm interested in creating a new configuration preference for my user-agent (general.useragent.override). I know how to manually create one via about:config; however, it is overwritten by my user.js file every launch.

Is there a way to create an entry in the user.js file for a preference that does not exist?

General syntax: user_pref("general.useragent.override",Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0);

But obviously, this causes an error since that preference does not exist.

Thanks for the help!

I'm interested in creating a new configuration preference for my user-agent (general.useragent.override). I know how to manually create one via about:config; however, it is overwritten by my user.js file every launch. Is there a way to create an entry in the user.js file for a preference that does not exist? General syntax: user_pref("general.useragent.override",Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0); But obviously, this causes an error since that preference does not exist. Thanks for the help!

Isisombululo esikhethiwe

NVM...

To answer my questions...YES you can create a new config preference via the user.js file. Just don't be special like myself and use incorrect syntax.

The correct syntax: user_pref("general.useragent.override","Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0");

Funda le mpendulo ngokuhambisana nalesi sihloko 👍 0

All Replies (1)

more options

Isisombululo Esikhethiwe

NVM...

To answer my questions...YES you can create a new config preference via the user.js file. Just don't be special like myself and use incorrect syntax.

The correct syntax: user_pref("general.useragent.override","Mozilla/5.0 (Windows NT 10.0; Win64; x64; rv:58.0) Gecko/20100101 Firefox/58.0");