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Why firefox doesn't display js properly with javascript view activated

I am viewing JavaScript lessions and the lessons test to see javascript view is installed and activated. I installed the javascript view and activated it and it still does not display as the lessions say it should. The display of the code is as a negative with the background black and the letters white and not a box with "hello world" displayed..

I am viewing JavaScript lessions and the lessons test to see javascript view is installed and activated. I installed the javascript view and activated it and it still does not display as the lessions say it should. The display of the code is as a negative with the background black and the letters white and not a box with "hello world" displayed..

Todas las respuestas (2)

Note that current Firefox releases have a built-in JavaScript beautifier available as the jsb command in the developer toolbar (Shift+F2).
This can also be used with all text (JavaScript) files and not only with files that the JavaScript viewer extension detects.

Does the viewer have a button to actually run the script? If not, try running it from inside a web page.