[Project_owners] intensive recursions in Javascript

Preet Shihn preetshihn at gmail.com
Mon May 7 11:21:12 PDT 2007


I am a semi-javascript newbie. I noticed that Javascript isn't really great
with long running recursive methods or a long running while loop that can be
memory intensive.
I see the browser popup "A script on the page may be busy, or it may have
stopped responding..... Stop the script or continue". I was wondering how
people have dealt with this. An example of such a method that I was
implementing is Flood Fill. Basically, fill a contoor with a specified

I know you can set a preference so that this message does not popup untill
you run a bazillion line (whatever you set to), but that is not what I am
looking for. I want a better performance.

Other alternatives I can think of is wrting a custom xpcom object in C that
does my computation.. or maybe a hidden java applet.

It would be good to know how other people have dealt with this problem in


p.s. In case anyone is interested, my flood fill method is a modified
version of http://www.htmlgoodies.com/primers/jsp/article.php/3622321
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