為了改善您的使用體驗,本網站正在進行維護,部分功能暫時無法使用。若本站的文件無法解決您的問題,想要向社群發問的話,請到 Twitter 上的 @FirefoxSupport 或 Reddit 上的 /r/firefox 發問,我們的社群成員將很快會回覆您的疑問。

搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

了解更多

Java Script error after updating to 9.0.1

  • 7 回覆
  • 4 有這個問題
  • 5 次檢視
  • 最近回覆由 Sarek

more options

This one is a bit different from the others posted. My error is "Exc in ev handl: TypeError:brw is undefined. My home pages won't load, much of the Firefox menu isn't working, some toolbar buttons don't work, the url doesn't update, etc.

Restarting in safe mode with add-ons disabled solves the problem. But how do I figure out which add-on is the culprit? If I start Firefox normally with the error, I can't get to the add-ons at all. If I run in safe mode, the add-on screen doesn't let you re-enable them one at a time.

Ideas?

This one is a bit different from the others posted. My error is "Exc in ev handl: TypeError:brw is undefined. My home pages won't load, much of the Firefox menu isn't working, some toolbar buttons don't work, the url doesn't update, etc. Restarting in safe mode with add-ons disabled solves the problem. But how do I figure out which add-on is the culprit? If I start Firefox normally with the error, I can't get to the add-ons at all. If I run in safe mode, the add-on screen doesn't let you re-enable them one at a time. Ideas?

所有回覆 (7)

more options

To ferret out the culprit you have to re-enable one addon at a time to see which one is problematic.

more options

But how? If I'm in safe mode, they're all disabled with no enable button.

more options

You should see an Enable button if you start Firefox in Safe mod without making changes on tha safe mode start window.

If it does work in Safe-mode then disable all extensions and then try to find which is causing it by enabling one at a time until the problem reappears.

  • Use "Disable all add-ons" on the Safe mode start window to disable all extensions.
  • Close and restart Firefox after each change via "File > Exit" (Mac: "Firefox > Quit"; Linux: "File > Quit")
more options

I do run Safe mode without changes. On the add-on screen, there are "disable" buttons. I press those and they become "enable" buttons. But they are placebos. The add-ons do not enable. I guess Safe mode conquers all.

more options

If you see Enable buttons then you are not in Safe mode and the extensions are still enabled.

In Firefox 4+ versions you can use one of these to start in Safe mode:

  • Help > Restart with Add-ons Disabled
  • Hold down the Shift key while double clicking the Firefox desktop shortcut (Windows)
  • Don't make any changes on the Safe mode start window.
more options

Cor-el, I appreciate your quick responses.

I do restart using help-restart with add-ons disabled. (I'm on ver. 9.0.1) When it's finished, all add-ons *are* disabled. I then go to the add-on screen. At the top is a banner message, "All add-ons have been disabled by safe mode."

Some of the add-ons have "disable" buttons next to them. Pushing them merely switches the text in the button to "enable." Pushing again merely switches the text in the button to "disable." The title of each add-on never budges from "disabled." The banner message also remains unchanged.

So I cannot enable any of the add-ons while in safe mode.

more options

Fixed it! I think. I had to uncheck the boxes on the advanced java script window. Why, I don't know. But I think that did it.