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Rounding of Numbers in Actionscript

Oct 15th, 2007

by Sidney de Koning.

[UPDATE: I have an updated version for both Actionscript 2 and Actionscript 3 here]
To truncate Numbers in Actionscript:
Three decimals:

var yourNumber:Number = 23.263636453737383838383838;
yourNumber =  Math.round(yourNumber *1000)/1000;
// Outputs 23.263

Two decimals:

var yourNumber:Number = 23.263636453737383838383838;
yourNumber = Math.round(yourNumber *100)/100;
// Outputs 23.26

One decimal:

var yourNumber:Number = 23.263636453737383838383838;

yourNumber = Math.round(yourNumber *10)/10;
// Outputs 23.2

Posted in: Actionscript 2.

3 Comments on “Rounding of Numbers in Actionscript”

#1 Dan
on Nov 24th, 2008 at 4:59 pm

Nice… very smart code. Lol thanks
#2 Kellan Fisher
on Jun 5th, 2009 at 7:36 pm

function decRound(num,dp)
{
var decimals=Math.pow(10,dp);
var output=Math.round(num*decimals)/decimals;
return output;
}

// num is the number you wish to round
// dp is the amount of decimal places to round it too
#3 Sidney de Koning
on Jun 24th, 2009 at 11:41 am

Hi Kelllan,

Thanks for the function. Very clean and lean. Like it.

Cheers, Sid

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