fibonacciWhile

fibonacciHTML.js

// 0, 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89
// 1, 1, 2, 3, 5, 8, 13, 21, 34, 55, 89
// Fn = Fn-1 + Fn-2
// F0 = 0, F1 = 1

"use strict";

// fibonacci html output
function fibonacciHTML() {
    var result = 0, term1 = 0, term2 = 1, i = 1;
    var text = term1 + ' ' + term2;
    while(i < 10) {
        result = term1 + term2;
        text += '&nbsp;' + result;
        term1 = term2;
        term2 = result;
        i++;
    }
    return text;
}

// error in console document.getElementById(...) is null
window.onload = function() {
    document.getElementById("fibWhile").innerHTML = fibonacciHTML();
}