address basics browser client code common create customer data document doesn explain fairly file free function help issue javascript list order page php price purchase respective returning sample shipping side tangible text total totally type values var working

I am a fairly inexperienced, renegade programmer and know only the basics of javascript and php, so this may be a simple question...

I am trying to incorporate logical if-then statements to create a thank you page that reports a well-formatted customized invoice, reporting only the data applicable to each customer's purchase. In other words, the invoice for a free file download does not need to report the price or shipping address, whereas the invoice for a tangible good would report all this information.

I am more familiar with javascript, so I wrote myself a code in javascript to trigger events on the thank you page, based upon the order data - but I cannot seem to figure out how to get my javascript code to recognize this order data... here's a sample of my logic:

<script>
var gross = document.getElementById(gross);
if (gross==null)
{document.write("<b>FREE DOWNLOAD</b>")}
else
{document.write("<b>ORDER DETAILS</b>")}
</script>

of course, this doesn't work because I totally just pulled that .getElementById command out of the air... but I am beginning to wonder whether this kind of thing is possible using javascript or whether I will have to try php instead. or maybe I am just missing something simple.

After reading more into this issue, I understand I'm going to have to use a php function to parse my page for these variables. Could someone explain to me why this doesn't work?

<script type="text/javascript">
var gross = "<?php print $_GET['mc_gross']; ?>";
if (gross==null)
{document.write("<b>OUTPUT 1</b>")}
else
{document.write("<b>OUTPUT2</b>")}
</script>

The php print function is not returning any variables...

E-junkie publishes your code "as it is". Browser can parse the client side code i.e. JavaScript but it can't parse PHP.

The only parsing E-junkie does to your code before publishing it is to replace "template variables" with their respective values.

So, you code should be -

<script type="text/javascript">
var gross = "[%total%]";
if (gross==null)
{document.write("<b>OUTPUT 1</b>")}
else
{document.write("<b>OUTPUT2</b>")}
</script>

PS: I am assuming your are using this code on "common" thank you page.

For the complete list of template variables that you can use in the thank you page, please see http://www.e-junkie.com/ej/help.customization.htm

Hi, thanks for your help! I thought I had tried that one already, but I was apparently mistaken. Everything is working perfectly now!