help with client side refresh javascript

Hi guys,

I have a form set up using PHP, MYSQL, and HTML. Basically I am using radio buttons to give the user options of what product to select, then depending on the product they want to purchase I'm displaying my price at the bottom of the page, fairly simple. I am new to java but have heard that you can preload everything and make it user side to make refresh times almost non-existent. Up to now I have been unsuccessfull finding any sort of guides, sample codes, or similar topics on forums. If anyone has any advice, links, or knows of any books that tackle this problem please help. I basically just need some direction. Thanks.

Btw, its Javascript not Java, Java is an entirely different language.

Well I suppose you could just use an array in the Javascript that contains the relevant prices. Then using document.pricetextboxname.value = prices(num)

But this will be better if you can use a server side language to put into the javascript array only the prices needed for the category that the user is in.

Yea, sorry, I meant javascript. I need a little more then that, are there in books out that talk about this, or any tutorials on the web that I'm missing. Thanks.

Sorry I didn't mean to post anonymously, that last post was me though.

I assume you are getting all the info of the products from the database and storing it in an multi array .ie. $array[item_id][item_info]
Therefore you can have a Javascript thing at the top of your page that the php can insert the prices into:
<script>
<?php
echo "prices = new array(";
for($i=0;$i<count($item_array);$i++){
echo $item_array[$i]["price"].","
}
echo ")n";
?>
function add(id){
document.pricetextbox.value = document.pricetextbox.value + prices[id]
}
</script>

Then your data:

<?php
for($i=0;$i<count($item_array);$i++){
echo $item_array[$i]["info"];
echo $item_array[$i]["price"];
echo "<input type="button" onClick="add(".$i.")" value="Add this item">n";
}

echo "<br>n";
echo "<form method="post" action="buypage">n";
echo "Total: £<input type="text" name="pricetextbox" value="00.00">n";
echo "<input type="submit" name="submit" = value=" Submit ">n";
echo "</form>n";
?>

Thanks guys! Works beautifully!