all js exceptions

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Starting in Firefox 3 (Gecko 1.9), the behavior of JavaScript exception logging to the Error Console changed to be less verbose. In particular, exceptions raised in inner JavaScript frames may not be logged in some circumstances. This preference allows those exceptions to appear in the Error Console.

Possible values and their effects


Log exceptions in inner JS frames in the Error Console.


Do not log exceptions in inner JS frames to the console. (Default)

Recommended settings

If you are an extension developer and need to see exceptions associated with JavaScript and C++ interacting, you should set this preference to true.

First checked in

2008-04-10 by Ben Turner

Has an effect in

  • Firefox (nightly builds since 2008-04-10)

Related bugs

Related preferences

See also

External links