Log N (to the base 2) and N Log N

by Hari Menon

HTML

<span>Input Data: </span> <input type="text" name="input" id="input"> <button id="calculate">Calculate</button><br><span id="output"></span>

JavaScript

document.querySelector('#calculate').onclick = function(){
    var n = document.querySelector('#input').value;
    var Logn = Math.log2(n);
    console.log('n: ' + n);
    console.log('log n: ' + Logn);
    document.querySelector('#output').innerHTML = n * Logn;
};