Actionscript's Number class' toFixed() method returns strange values

Question

I'm doing some calculation with numbers and would like to only print an integer (the number without the decimals).

I thought that the toFixed() method of the Number class would do the trick, and it does most of the time. But quite frequently strange values are returned. Here are 2 examples:

• Number(0.002).toFixed(0) returns "0." while Number(1.002).toFixed(0) returns "1" (without the period)

• Once in a while, Number(0.002).toFixed(0) returns "1"

Needless to say that's not the expected behaviour. Am I not using this method correctly?

*edit: * I know I just have to do int(0.002) to get 0 but I'd like to understand that strange behaviour.

Answer 1

see if this helps :

http://stackoverflow.com/questions/632802/how-to-deal-with-number-precision-in-actionscript

Answer 2

I've tested both on Flex SDK 3.4 and Flex SDK 4.0 and it looks like a bug, maybe post it on bugs.adobe.com? Although I think it might be related to the Flash Player rather than Flex.

Anyway if you're trying to convert a number to a string with no decimal places you can use this as a workaround:

Math.round(theNumber).toString()

This will get rid of all the digits after the dot.

Answer 3

This is a known bug. The unsexy workaround is to use either use Math.round() or just checking the returned string for that trailing period.

See bug report on JIRA here: http://bugs.adobe.com/jira/browse/FP-1595