Recursive function : Function Definition « Function « JavaScript Tutorial

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JavaScript Tutorial » Function » Function Definition

7. 1. 5. Recursive function


<HTML>

<HEAD>

   <SCRIPT>

   function fib (inNum) {

      if (inNum == 0) 

        var fibNum = 0;

      else{

        if (inNum == 1)

           fibNum = 1;

        else{

           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) + " <br>");

      }

   }

   

   </SCRIPT>

</HEAD>

<BODY>

   <FORM Name="theForm">

   <INPUT Type=Text Name="numFibs">

   <INPUT Type=Button Value="Show Fibs" onClick='writeFibs(numFibs.value);'>

</FORM>

</BODY>

</HTML>

7. 1. Function Definition
	7. 1. 1.	Functions
	7. 1. 2.	Define the simplest function
	7. 1. 3.	Define a function
	7. 1. 4.	Calculation in function
	7. 1. 5.	Recursive function

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