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I am beginning to create a form to let customers get quotes depending on the options they select. I was doing fine getting the total to work until I added the check box. Why will it not work now?
[code=php]
<head>
<meta http-equiv=”Content-Type” content=”text/html; charset=UTF-8″ />
<title>Quote</title>
<script type=”text/javascript”>
function calc(){
frm = document.form1;
n1 = frm.select_1.options[frm.select_1.selectedIndex].value;
n2 = frm.select_2.options[frm.select_2.selectedIndex].value;
n3 = frm.envelope.options[frm.envelope.selectedIndex].value;
if (printed.checked) { n4 = (printed.value); }
res = parseFloat(n1) + parseFloat(n2) + parseFloat(n3) + parseFloat(n4);
frm.result.value = res;
}
</script>
</head>
<body>
<form name=”form1″ id=”form1″ method=”post” action=””>
<p>What style invitation do you want :
<select name=”select_1″>
<option selected=”selected”>INVITATION SELECTION</option>
<option value=”.50″>Standard invitation ($0.50 each)</option>
<option value=”1.20″>Metallic invitation ($1.20 each)</option>
<option value=”1.50″>Textured Metallic invitation ($1.50 each)</option>
<option value=”2.00″>Fabric invitation ($2.00 each)</option>
</select>
<br />
Do you want an envelope liner:
<select name=”select_2″>
<option selected=”selected”>LINER SELECTION</option>
<option value=”1.00″>Standard color liner ($1.00each )</option>
<option value=”2.00″>Metallic liner ($2.00 each)</option>
</select>
<br />
What type of Envelope
<select name=”envelope” >
<option selected=”selected”>ENVELOPE SELECTION</option>
<option value=”.42″>envelope in E1 color ($0.42 each)</option>
<option value=”.50″>envelope in E2 color ($0.50 each)</option>
<option value=”.60″>envelope in E3 color ($0.60 each)</option>
</select>
<br />
Do you want the envelope printed
<input name=”printed” type=”checkbox” id=”printed” value=”.50″ />
</p>
<p>
<input type=”button” name=”Button” value=”Calculate” onclick=”calc()” />
The total cost per invitation is
<input name=”result” type=”text” id=”result” />
</p>
</form>
</body>
</html>