/*
Mastering JavaScript, Premium Edition
by James Jaworski
ISBN:078212819X
Publisher Sybex CopyRight 2001
*/
<HTML>
<HEAD><TITLE>Exception Test</TITLE></HEAD>
<SCRIPT LANGUAGE="JavaScript"><!--
function primeTest(n) {
document.write("Testing "+n+": ")
try {
if(n < 1 || n > 20) throw "It's out of range"
for(var i = 2; i < n; ++i)
if(n % i == 0) throw "It's divisible by " + i
document.writeln("It's prime.<BR>")
}
catch (exception) {
document.writeln(exception+".<BR>")
}
}
--></SCRIPT>
<BODY>
<P>This script only works with Internet Explorer 5, Navigator 6, or later browsers.</P>
<SCRIPT LANGUAGE="JavaScript"><!--
for(i = 0; i <= 21; ++i) {
primeTest(i)
}
--></SCRIPT>
</BODY>
</HTML>
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