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Editorial Team
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Asked: 2026-05-19T02:19:20+00:00

I’m making a simple affiliate ad rotation JavaScript. I’m still new to JavaScript and

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I’m making a simple affiliate ad rotation JavaScript. I’m still new to JavaScript and don’t fully understand it so bear with me.

Google’s adsense is split into 2 parts, one to set the variables, and the next to get the script. Then Amazon has an iframe to get it’s ad’s. All I want to do is use a random number from 1 to 2 (will be larger later) that will randomly select one of them to display on my localhost.

<script type="text/javascript"><!--
/* Custom footer */

select = rand(2);

if(select == 1){
     google_ad_client = "-----------";
     google_ad_slot = "---------";
     google_ad_width = ---;
     google_ad_height = --;

     //get this google 
     <script ...src="http://pagead2.googlesyndication.com/pagead/show_ads.js

} else {
         <iframe src="http://rcm.amazon.com/e/cm?t=------&o=1&p=48&l=ur1&category=amazonhomepage&f=ifr" width="728" height="90" scrolling="no" border="0" marginwidth="0" style="border:none;" frameborder="0"></iframe>
}
</script>
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1 Answer

  1. Editorial Team

    You need to use document.write("<html>or text</html") to write html out to the page, though for the iframe i would suggest putting it inside another div

    <script type="text/javascript"><!--
/* Custom footer */

var select = Math.floor(Math.random()*2);

if(select == 1){
     google_ad_client = "-----------";
     google_ad_slot = "---------";
     google_ad_width = ---;
     google_ad_height = --;

     //get this google 
     document.write("<script ...src='http://pagead2.googlesyndication.com/pagead/show_ads.js' />");

} else {
     document.getElementById('adContainer').innerHTML('<iframe src="http://rcm.amazon.com/e/cm?t=------&o=1&p=48&l=ur1&category=amazonhomepage&f=ifr" width="728" height="90" scrolling="no" border="0" marginwidth="0" style="border:none;" frameborder="0"></iframe>');
}
</script>
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