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/*
Learn How to Program Using Any Web Browser
by Harold Davis
Apress CopyRight 2004
ISBN: 1590591135
*/
<HTML>
<HEAD>
<TITLE>
Counting rabbits...
</TITLE>
<SCRIPT>
function fib (inNum) {
if (inNum == 0)
var fibNum = 0;
else {
if (inNum == 1)
fibNum = 1;
else {
// recursive function call
fibNum = fib(inNum - 2) + fib(inNum - 1);
}
}
return fibNum;
}
function writeFibs(topFib) {
for (var i=0; i <= topFib ; i++)
{
document.write ("Fib(" + i + ") = " + fib(i) + " rabbit pairs<br>");
}
}
</SCRIPT>
</HEAD>
<BODY>
<FORM Name="theForm">
<TABLE cellspacing=5>
<TR>
<TD>
<INPUT Type=Text Name="numFibs">
<TD>
<INPUT Type=Button Value="Show Fibs" onClick='writeFibs(numFibs.value);'>
</TR>
</TABLE>
</FORM>
</BODY>
</HTML>
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