What is wrong with this?

**TheShadow** · Apr 7, 2005, 18:28

Code:

<?xml version="1.0" encoding="UTF-8"?>
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN"
  "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> 

<html xmlns="http://www.w3.org/1999/xhtml" xml:lang="en" lang="en">
<head>
<title>Triangle Sum</title>
<style type="text/css">
p { margin-left:10px}
</style>
</head>
<body>
<form id="triform">
<fieldset>
<legend>Triangle Sum</legend>
<p>
<input type="text" id="one" name="one" value="Side One" /><br />
<input type="text" id="two"  name="two" value="Side Two" /><br />
<input type="text" id="three" name="three" value="Side Three" /></p><br />
</fieldset><p>
<input type="button" value="Sum?" onclick="TriangleCheck()">
<input type="reset" /></p>
</form>
<script type="text/javascript">
//[[CDATA[
function TriangleCheck(){
var sideone;
sideone = document.getElementById("triform").one.value;
var evalone;
evalone = eval("sideone");

var sidetwo;
sidetwo = document.getElementById("triform").two.value;
var evaltwo;
evalone = eval("sidetwo");

var sidethree;
sidethree = document.getElementById("triform").three.value;
var evalthree;
evalone = eval("sidethree");

if ((evalone + evaltwo < evalthree)||(evalone + evalthree < evaltwo)||(evalthree + evaltwo < 

evalone)){
{
alert('The sum of the two sides is less than the third side');
}
else
{
var sum;
sum = (evalone + evaltwo + evalthree);
alert('The sum of the triangle is ' + sum);
}
}
//]>>
</script>
</body>
</html>

I cant see it ...

**dc dalton** · Apr 7, 2005, 18:51

Not sure what the problem is (since you didnt say) BUT three things I see right off the bat:

1. Get rid of this: <?xml version="1.0" encoding="UTF-8"?>

IE Hates that tag and it will make your life miserable

2. Why do you have your javascript in the body? Either put it in a script block in the head or external js file

3. You dont need this //[[CDATA[ OR this: //]>>

In xhtml 1.0 strict ....... get them out

thats all I see just glancing

**andrin** · Apr 7, 2005, 23:53

Originally Posted by dc dalton

Not sure what the problem is (since you didnt say) BUT three things I see right off the bat:

1. Get rid of this: <?xml version="1.0" encoding="UTF-8"?>

IE Hates that tag and it will make your life miserable

This is correct. IE hates this and makes your attempt switching to standard compliance mode all in vain. IE will be i quirks mode. Nevertheless it is good practice to have the prolog in all XML documents and XHTML is by definition XML. You should implement content type negotiation server-side to support different rendering for different clients.

Originally Posted by dc dalton

2. Why do you have your javascript in the body? Either put it in a script block in the head or external js file

Totaly agree with you here dc dalton.

Originally Posted by dc dalton

3. You dont need this //[[CDATA[ OR this: //]>>

In xhtml 1.0 strict ....... get them out

thats all I see just glancing

As a matter affect. There are times you need to use [[CDATA[ but the corrent syntax is:

Code:

<![CDATA[
// JavaScript goes here
]]>

When serving XHTML as application/xhtml+xml ordinary HTML (and XML) comments like  are (and should be) ignored by the XML/XHTML parser. That is: They do not exist. It´s like writing nothing. This JavaScript code does not exist and can´t be interpreted by the JavaScript engine as the HTML-parser does not forward it. There is a lot of debate in how you exactly should write to both support legacy and future browsers but that you have to google about and get your own opinion.

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