Windows 10 reached EOS (end of support) on October 14, 2025. For more information, see this article.

Avatar for Username

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

Echekwara usoro a. Biko jụọ ajụjụ ọhụrụ ma ọ bụrụ na ị chọrọ enyemaka.

How to read the Firefox update channel (Release or ESR) from javascript code ?

  • 1 nzaghachinzaghachi
  • 1 nwere nsogbu anwere nsogbu a
  • 91 views
  • Nzaghachi ikpeazụ nke user633449

vinuth
vinuth

I need to allow the user to login to my application only if he is using ESR update channel of firefox.

I tried to read the value from "navigator.userAgent.search("ESR")" command but this command does not say any thing about update channel.

How can i check firefox has esr update channel or not ? from javascript.

Thanks.

I need to allow the user to login to my application only if he is using ESR update channel of firefox. I tried to read the value from "navigator.userAgent.search("ESR")" command but this command does not say any thing about update channel. How can i check firefox has esr update channel or not ? from javascript. Thanks.

All Replies (1)

user633449
user633449

The release channel is not exposed to websites for good reason. What you want to do is not possible.