CODEWITHSUNDEEP
actionscript-3
Noah R
Noah R

Reputation: 5477

AS3 - How can I generate a random number?

How can I generate a random number in Flash CS5 using AS3, I'd prefer it as simple as possible.

My attempt gives me an error:

day_gross.addEventListener(MouseEvent.CLICK, randomNumber);
function randomNumber(event:MouseEvent):void{
    var randint:Number = Math.random();
    trace(randint);
    }

Upvotes: 0

Views: 28165

Answers (4)

Mark Knol
Mark Knol

Reputation: 10163

Math.random() returns a random number between 0-1.

The following code create and traces a round number between 0 and the maximum value of uint:

var randomUint:uint = uint(Math.random() * uint.MAX_VALUE);
trace(randomUint);

This next code example defines and logs a rounded number between the minimum and the maximum value of int (with negative numbers too):

var randomInt:int = int.MIN_VALUE + int(Math.random() * Number(int.MAX_VALUE + int.MIN_VALUE));
trace(randomInt);

Upvotes: 9

jakson
jakson

Reputation: 1

The simplest way to get it to work is this. when you click on a button it generates a random number. it is self explainatery

protected function button1_clickHandler(event:MouseEvent):void
{
    var numbers:Array = new Array(49);
    for (var i:int = 0; i < numbers.length; i++) 
    {
        numbers[i]=i;
        numbers[i] =[Math.round( Math.random()*i)];
        resulttxt.text = numbers[i];
    }
}
<s:Button top="342" label="Generate" click="button1_clickHandler(event)" horizontalCenter="0"/>
<s:TextInput id="resulttxt" left="10" top="65" width="250"/>

This work for me. try it out

Upvotes: 0

Richard Szalay
Richard Szalay

Reputation: 84734

You can use Math.random() to generate a pseudo-random number.

If you are generating numbers for the purposes of cryptography, however, you should use flash.crypto.generateRandomBytes() (requires FP11)

Upvotes: 5

giannis christofakis
giannis christofakis

Reputation: 8321

private function randomIntBetween(min:int, max:int):int {
    return Math.round(Math.random() * (max - min) + min);
}

Upvotes: 2

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