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Program of the Fibonacci series in Javascript JS with the flowchart

Program of the Fibonacci series in Javascript JS with the flowchart
In this tutorial, we will try to learn the followings;

  1. Flowchart of the Fibonacci series program.
  2. Javascript program to show the Fibonacci series.
  3. javascript program to show the Fibonacci series with form values entered by the user.

Flowchart of the Fibonacci series program.

 

 

Figure: Fibonacci-series-algorithm

Note that this flowchart is drawn by considering the C++ program of Fibonacci series. So it may be little different as we write the code below in Javascript.

Javascript program to show the Fibonacci series.

<!DOCTYPE html>
<html>
<head><title>fabonnic series</title>
<script>
function fab(){
    var A = 0;
    var B = 1;
    var C;

    var N = document.getElementById("number").value;

    document.write(A+"<br />");
    document.write(B+"<br />");

    for(var i=3; i <= N;i++)
    {
        C = A + B;
        A = B;
        B = C;

        document.write(C+"<br />");
    }
}
</script>
</head>
<body>
<h2>
Please input any Number<input id="number" value="15">
<button type="button" onclick="fab()">fab</button>
</h2>
</body>
</html>

javascript program to show the Fibonacci series with form values entered by the user.

<!DOCTYPE html>
<html>
<head><title>fibonacci series</title>
<script>
function fib(){
    var A = 0;
    var B = 1;
    var C;

    var N = document.getElementById("number").value;

    document.write(A+"<br />");
    document.write(B+"<br />");

    for(var i=3; i <= N;i++)
    {
        C = A + B;
        A = B;
        B = C;

        document.write(C+"<br />");
    }
}
</script>
</head>
<body>
<h2>
Please Enter any Number<input id="number" value="">
<button type="button" onclick="fib()">fib</button>
</h2>
</body>
</html>

Topic Covered

Program of the Fibonacci series in Javascript JS with the flowchart. 
 
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