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.

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

This thread was archived. Please ask a new question if you need help.

Why am I getting a (Java Script Appication) - Type error: text is undefined message when I open Firefox?

  • 1 reply
  • 265 have this problem
  • 5 views
  • Last reply by Vivek

jsduncan04
jsduncan04
more options

When I open Firefox I am getting a pop up error message 

                      (Java Script Application)
                   Type error: text is undefined

                                         OK

If i click OK Firefox opens, but it is operating much slower since I started receiving the error message.

When I open Firefox I am getting a pop up error message (Java Script Application) Type error: text is undefined OK If i click OK Firefox opens, but it is operating much slower since I started receiving the error message.

All Replies (1)

Vivek
Vivek
more options

Hi,

Please check if this happens in Safe Mode.

Fixing Firefox TypeError Messages.

Problematic Extensions

Troubleshooting Extensions and Themes

Uninstalling Add-ons

Uninstalling Toolbars

Cannot Uninstall Add-on