In ra dãy số Fibonaci tới số thứ n dung javascript

<!DOCTYPE html>
<html>
    <head>

        <meta charset="utf-8">
    </head>
    <body>

        <input id="input" type="number" max="1000" title="please enter number only">
        <button value="submit" onclick="fibonaci()">submit</button>
    </body>
    <script>

        var count = 0;
        var a = 0, b = 1, c = 0;
        function fibonaci(){
            var n = document.getElementById("input").value;
            if(n >= 1 && n <= 100)
            {
                while(count < n)
                {
                    c = a + b;
                    console.log(c);
                    a = b;
                    b = c;
                    count ++;
                }
            }
        }
    </script>
</html>