Solved

Revolving Graphics (Banner Ads)

Posted on 2004-08-02
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Last Modified: 2013-11-28
Can anyone help me with a very simple javascript code ... to show a random banner ad?

I have 5 images - such as the link below - each with their own very specific URL link.
I need to show one image at a time RANDOMLY.

SO if I had five images - 1,2,3,4,5 .. find a random number between 1&5 and show the appropriate image (AND it's URL) for that number.

The type of image & URL:
<a href="http://www.amazon.com/exec/obidos/ASIN/0060731583/fred"><img src="http://www.fred.com/tfranks0731.jpg"></a>


Thanks!
Richard
0
Comment
Question by:rcbuchanan
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4 Comments
 
LVL 36

Accepted Solution

by:
Zyloch earned 200 total points
ID: 11695436
Sure.
Have two arrays. One array has the src of all the images and the other has the links for each banner repectively, meaning the first element of the image src array corresponds to the first element of the links array.

i.e.
var imgSrc=new Array;
var hreflinks = new Array;

imgSrc[0]="blue.gif";
hreflinks[0]="link_for_blue.html";
imgSrc[1] = "red.gif";
hreflinks[1] = link_for_red.html";

etc.etc.

Then, have this code where you want the banner and link to appear inside the <body> tag:
<script language="javascript">
var randomNum = Math.floor(Math.random() * imgSrc.length);
document.write("<a href=\""+hreflinks[randomNum]+"\"><img src=\""+imgSrc[randomNum]+"\"></a>");
</script>

Regards,
${Zyloch}
0
 
LVL 7

Assisted Solution

by:Xxavier
Xxavier earned 200 total points
ID: 11695810
<script>
var banSrc=new Array('http://www.experts-exchange.com/images/indexLogoPerson_05.gif',
 'http://www.experts-exchange.com/images/indexLogoPerson_03.gif',
 'http://www.experts-exchange.com/images/indexLogoPerson_02.gif',
 'http://www.experts-exchange.com/images/indexLogoPerson_04.gif',
 'http://www.experts-exchange.com/images/indexLogoPerson_01.gif')

var banHref = new Array('http://google.com',
 'http://yahoo.com',
 'http://msn.com',
 'http://abc.com',
 'http://nbc.com')
</script>

<body>
<a id="banLink" href="#"><img name="banImg"></a>
<script>
 index=Math.floor(banSrc.length*Math.random())
 document.getElementById('banImg').src=banSrc[index]
 document.getElementById('banLink').href=banHref[index]
</script>
</body>


Ta! Da! Xx
0
 
LVL 33

Assisted Solution

by:humeniuk
humeniuk earned 100 total points
ID: 11695915
Those look like solid solutions to me.

For the hell of it, though, you can find 8 random images JavaScript scripts at http://www.hotscripts.com/JavaScript/Scripts_and_Programs/Randomizing/Random_Images/index.html and 25 random images PHP scripts at www.hotscripts.com/PHP/Scripts_and_Programs/Randomizing/Random_Images/index.html.
0
 
LVL 36

Expert Comment

by:Zyloch
ID: 11696068
Are you having a problem with my script?
0

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