Fibonacci numbers in Html javascript

Question

This is Fibonacci numbers codes in HTML and it is supposed to print out Fibonacci numbers after taking the users input which can be any number

<html>
    <head>
        <script>
          function fib(number) {

    var loop = [0, 1];

    for (var i = 2; i < number; i++) {
        loop[i] = loop[i-1]+ loop[i-2];


    return loop[number-1];
    }

            document.getElementById("output").innerHTML
    }
        </script>

    </head>
    <body>
        <input type text="text" id="txtloop" />
        <input type="button" id="btnEnter" value="Enter" onclick="fib(txtloop.value)" />

        <p id="output"></p>

    </body>
</html>

document.getElementById("output").innerHTML is there all by itself.... — epascarello
– epascarello, Commented Nov 14, 2019 at 2:25

ameermuhammed · Accepted Answer · 2019-11-14 04:58:39Z

1

Access DOM elements with HTML DOM querySelector

function fib() {
let loop = [0, 1];
let number=document.getElementById('txtloop').value;
for (let i = 2; i < number; i++)
 loop[i] = loop[i-1]+ loop[i-2];
  document.getElementById('output').innerHTML=loop[number-1];
}

<input type text="text" id="txtloop" />
<button onclick="fib()">Enter</button>
<p id="output"></p>

Comments

Aarthi A · Accepted Answer · 2019-11-14 09:18:01Z

Fibonacci Sequence is the series of numbers: 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, . . . Each subsequent number is the sum of the previous two.

<html>
<body>

 <input type text="text" id="txtloop" />
        <input type="button" id="btnEnter" value="Enter" onclick="fibonacci_series(txtloop.value)" />

        <p id="output"></p>
<p id="demo"></p>

<script>
var fibonacci_series = function (n) 
{
  if (n==1) 
  {
var loop = [0, 1];
   document.getElementById("output").innerHTML = loop;
  return loop;
  } 
  else 
  {
    var s = fibonacci_series(n - 1);
    s.push(s[s.length - 1] + s[s.length - 2]);
    document.getElementById("output").innerHTML =s;
    return s;
  }
   
};

</script>

</body>
</html>

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