JSFiddle - React, Tailwind, and code Playground

by napotopia

HTML

<div id="fibo"></div>

JavaScript

(function() {
    var fiboEl    = document.querySelector('#fibo'),
        arrayacci = [0,1];
    
    for (var n = 2; n <= 20; n++) {
        arrayacci[n] = arrayacci[n-2] + arrayacci[n-1];
    }

    var output   = arrayacci.join(", "),
        textNode = document.createTextNode(output);
    
    fiboEl.appendChild(textNode);    
})();