This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

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

Firefox 78.11.0esr macOS 10.11  Do not work web api browser.windows.create

  • 2 cavab
  • 1 has this problem
  • 2 views
  • Last reply by MYS 2203

more options

Browser.windows.create does not work on Firefox 78.11.0esr macOS 10.11.

Even if I executed the sample code, it didn't work.

sample code https://github.com/mdn/webextensions-examples/tree/c42a263968d06d1722692bd77cf09e738006977a/window-manipulator

Browser.windows.create does not work on Firefox 78.11.0esr macOS 10.11. Even if I executed the sample code, it didn't work. sample code https://github.com/mdn/webextensions-examples/tree/c42a263968d06d1722692bd77cf09e738006977a/window-manipulator

All Replies (2)

more options

Hi melonics, if you are using the about:debugging page to work with your extension, you can click the Inspect button to open a developer tools console where messages specific to your extension can appear. https://developer.mozilla.org/docs/Tools/about:debugging

Sometimes they are a bit cryptic...

The Add-ons team has a website to help with extension development questions over here:

https://discourse.mozilla.org/c/add-ons/development

more options

Thank you for teaching.

error message Uncaught (in promise) Error: Invalid window

Check again from the error message.

Modified by MYS 2203