Copied from Bugsplat #330172 -------------------------------------------------------------------- Here is the problem which i found in the parseInt function of javascript . Expression Return Value Expected Value ---------- ------------- -------------- parseInt(15/12) 1 1 parseInt(12/15) NaN 0 parseInt(1/11) 0 0 If we do parseInt(a/b) where a/b is less than 1/10 , the return value is zero as expected but if a/b lies in between 1/10 and 1 , the return value in NaN rather than zero .

FYI, parseInt is for parsing integers, but you are passing in floating-point values, so parseInt ends up examining the prefix of the passed in value that looks like an integer. Still, the described behavior does not look correct. However, if I pull and build the JS shell, I don't see the behavior that you describe. Are you sure that this bug applies to Mozilla and not some 4.x browser ?

Actually, I was lame and didn't check it with Mozilla. I assumed Javascript had not changed from 4.x. I will take your word for it and mark it resolved. Thanks!

Changing component to "Javascript Engine". "Javascript" component is being retired.