JSFiddle - React, Tailwind, and code Playground

JavaScript

var myArray = makeArray(20, Math.random);

document.body.innerHTML = myArray.join("<br/>");

function makeArray(length, def) {
    var array = [];
    var funct = typeof def === "function";
    while (array.push(funct ? def() : def) < length);
    return array;
}