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browser.dom.window.dump.file redirects the ouput of window.dump() calls to a file whose address is specified in this preference if browser.dom.window.dump.enabled is set to true. Changes require an application restart.

  • Type:string
  • Default value:none
  • Exists by default: no
  • Application support: Gecko 1.9.2 (Firefox 3.6 / Thunderbird 3.1 / Fennec 1.0)
  • Status: Active; last updated 2012-03-18
  • Introduction: Pushed to Nightly on 2009-04-24
  • Bugs: bug 489938 


The value holds the file system path for the file in which the content of the window.dump() calls get written, e.g. C:\dump.txt . It will be created if it doesn't exist yet.

The line breaks have to be in the argument of the dump function, else successive dump calls will get logged into the same line.

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Contributors to this page: MatthewKastor, Aryx
Last updated by: MatthewKastor,