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Simple Math + Javascript

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Join Date: Jul 2005
Location: Dallas, TX
Posts: 481
Reputation: campkev is an unknown quantity at this point 
Rep Power: 4
Solved Threads: 19
campkev campkev is offline Offline
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Re: Simple Math + Javascript

  #2  
Jun 23rd, 2006
here's something to get you started.
Help with Code Tags 
<html>
<head>
<title>Our Products</title>
<META HTTP-EQUIV="CACHE-CONTROL" CONTENT="NO-CACHE">
<style type="text/css"> 
	.submenu { padding-left:15px;}
		</style>
<script type="text/javascript">
<!--



function addItem(cb){

if(document.getElementById){
var elAmt = document.getElementById('Amt');
var elExtra = document.getElementById('extraAmt');
var elSub = document.getElementById('subAmt');
var elTax = document.getElementById('taxAmt');
var elTotal = document.getElementById('totAmt');
		var amount = parseFloat(elAmt.innerHTML);
		if(cb.checked){
		elExtra.innerHTML = "4.99";
		elSub.innerHTML = amount + 4.99;
		elTax.innerHTML = (amount + 4.99) * .06;
		elTotal.innerHTML = ((amount + 4.99) * 1.06);
		}
		else{
		elExtra.innerHTML = "0.00"
		elSub.innerHTML = "10.00"
		elTax.innerHTML = "0.60"
		elTotal.innerHTML = "10.60";
		}
	}
}


-->
</script>
</head>
<body>
<p><b>ProductList</b></p>

<br>
<br>
Product Information:

<table>
<tr><td>Item Description</td><td id='Amt'>10.00</td></tr>
<tr><td><input type=checkbox name=mType onclick="addItem(this)" value="prod3">Add extra product for 4.99</td><td id='extraAmt'>0.00</td></tr>
<tr><td>subtotal</td><td id='subAmt'>10.00</td></tr>
<tr><td>sales tax</td><td id='taxAmt'>0.60</td></tr>
<tr><td>grand total</td><td id='totAmt'>10.60</td></tr>
</table></form>
</body></html>
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