Fibonacci

Here's a divertimento motivated by a twit @Monica_Usart.

It computes (using Javascript) the first n elements of the fibonacci sequence.

Number of elements in the sequence:

press 'Compute Fiboonacci' to get the fibonacci sequence

The code is straighforward:

< script language="javascript">

function fibonum( x)

{

a=""; for (i=1; i <= x; i++) { if (i > 1) a +=","; a+= fibo(i) }; return a;

}

function fibo(n)

{

if (n==1) return 1;if (n == 2) return 2; return fibo(n-1)+ fibo(n-2);

}

function dofibo()

{ document.getElementById("result").innerHTML=fibonum(document.getElementById("iter").value);

}

< form action="#">

< input type="button" value="Compute Fibonnaci" onclick="javascript:dofibo()">

Number of elements in the sequence: < input name="iter" id="iter" type="text" value="1">

< textarea name="result" id="result" rows="10" cols="80">press 'Compute Fiboonacci' to get the fibonacci sequence < /textarea>

< /script>< /form>