Random Functions

Random text or images is an easy feature to deploy that can develop interest on a project. Any application can benefit from not presenting the same information over and over during every visit. I have listed examples in JavaScript, ActionScript, PHP, and Coldfusion.

JavaScript

//Array Declaration
var myArray = new Array();
myArray[0] = "Vanilla";
myArray[1] = "Chocolate";
myArray[2] = "Butter Pecan";
myArray[3] = "Strawberry";
myArray[4] = "Neapolitan";
myArray[5] = "Chocolate Chip";
myArray[6] = "French Vanilla";
myArray[7] = "Cookies and Cream";
myArray[8] = "Vanilla Fudge Ripple";
myArray[9] = "Praline Pecan";
//Random Whole Number up to Arrays Length
var randNo = Math.round((myArray.length-1)*Math.random());
//Output
document.write(myArray[randNo]);

ActionScript

//Array Declaration
var myArray:Array = new Array();
myArray[0] = "Vanilla";
myArray[1] = "Chocolate";
myArray[2] = "Butter Pecan";
myArray[3] = "Strawberry";
myArray[4] = "Neapolitan";
myArray[5] = "Chocolate Chip";
myArray[6] = "French Vanilla";
myArray[7] = "Cookies and Cream";
myArray[8] = "Vanilla Fudge Ripple";
myArray[9] = "Praline Pecan";
//Random Whole Number up to Arrays Length
var randNo = Math.round((myArray.length-1)*Math.random());
//Output
trace(myArray[randNo]);

PHP

$myArray[0] = "Vanilla";
$myArray[1] = "Chocolate";
$myArray[2] = "Butter Pecan";
$myArray[3] = "Strawberry";
$myArray[4] = "Neapolitan";
$myArray[5] = "Chocolate Chip";
$myArray[6] = "French Vanilla";
$myArray[7] = "Cookies and Cream";
$myArray[8] = "Vanilla Fudge Ripple";
$myArray[9] = "Praline Pecan";
//Random Whole Number up to Arrays Length
$randNo = rand(0,count($myArray)-1);
//Output
print $myArray[$randNo];

Coldfusion

<!--- Array Declaration --->
<cfset myArray=ArrayNew(1)>
<cfset myArray[1]="Vanilla">
<cfset myArray[2]="Chocolate">
<cfset myArray[3]="Butter Pecan">
<cfset myArray[4]="Strawberry">
<cfset myArray[5]="Neapolitan">
<cfset myArray[6]="Chocolate Chip">
<cfset myArray[7]="French Vanilla">
<cfset myArray[8]="Cookies and Cream">
<cfset myArray[9]="Vanilla Fudge Ripple">
<cfset myArray[10]="Praline Pecan">
<!--- Random Whole Number up to Arrays Length --->
<cfset randNo = RandRange(1, ArrayLen(myArray))>
<!--- Output --->
<cfoutput>#myArray[randNo]#</cfoutput>

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One Response to “Random Functions”

1. Sexy Buzzoms says:

   November 7, 2008 at 11:26 am

   Thanks for the tips! Even though I’m just starting JS I totally get it, very clear and easy to follow.

   Reply