"A script on this page may be busy"

[Philipp Lenssen]

Using Firefox and this Reversi script
http://gamesforthebrain.com/game/reversi/ , I often get "A script on
this page may be busy ..." warning message. I suspect to be the
recursive min-max algorithm which takes too long in "Medium" mode -- it
never happens in "Easy" mode.

Is there anything I may try tweaking in the JS so users won't see this
somewhat annoying message?

 

[Martin Honnen]

Using Firefox and this Reversi script
http://gamesforthebrain.com/game/reversi/ , I often get "A script on
this page may be busy ..." warning message. I suspect to be the
recursive min-max algorithm which takes too long in "Medium" mode -- it
never happens in "Easy" mode.

Is there anything I may try tweaking in the JS so users won't see this
somewhat annoying message?

Mozilla's JavaScript debugger Venkman allows you to profile scripts so
that can be an approach to find out where your script spends (too) much
time.
In general if a script in a loop or recursion causes the script engine
to give such a warning then with client-side script one approach is to
try to break up the loop or recursion with different script blocks
calling each other with setTimeout or setInterval.