How to deal with Number precision in Actionscript?

Question

I have BigDecimal objects serialized with BlazeDS to Actionscript. Once they hit Actionscript as Number objects, they have values like:

140475.32 turns

Answer 1

i've used Number.toFixed(precision) in ActionScript 3 to do this: http://livedocs.adobe.com/flex/3/langref/Number.html#toFixed%28%29

it handles rounding properly and specifies the number of digits after the decimal to display - unlike Number.toPrecision() that limits the total number of digits to display regardless of the position of the decimal.

var roundDown:Number = 1.434;                                             
// will print 1.43                                                        
trace(roundDown.toFixed(2));                                              

var roundUp:Number = 1.436;                                               
// will print 1.44                                                        
trace(roundUp.toFixed(2));