Random Numbers 
Using javascript, you can easily get a random number. Just copy one one the functions below. To get a random number, just call CreateRandomNumber(Min, Max). The call returns a random number between Min and Max -- both included.
Simple version that does not work with Netscape 2:
<script language=javascript type="text/javascript">
<!--
function CreateRandomNumber(Min, Max)
{ var range = Max-Min+1;
return (Math.floor(Math.random() *
Math.pow(10,("" + range).length)) % range) + parseInt(Min);
}
// -->
</script>
Advanced version that works with all javascript enabled browsers:
<script language=javascript type="text/javascript">
<!--
function NextRandomNumber()
{ var hi = this.seed / this.Q;
var lo = this.seed % this.Q;
var test = this.A * lo - this.R * hi;
if (test > 0) this.seed = test;
else this.seed = test + this.M;
return (this.seed * this.oneOverM);
}
function RandomNumberGenerator()
{ var d = new Date();
this.seed = 2345678901
+ (d.getSeconds() * 0xFFFFFF)
+ (d.getMinutes() * 0xFFFF);
this.A = 48271;
this.M = 2147483647;
this.Q = this.M / this.A;
this.R = this.M % this.A;
this.oneOverM = 1.0 / this.M;
this.next = NextRandomNumber;
return this;
}
function CreateRandomNumber(Min, Max)
{ var rand = new RandomNumberGenerator();
return Math.round( (Max-Min) * rand.next() + Min );
}
// -->
</script>
|
