JSFiddle - React, Tailwind, and code Playground

JavaScript

no_random_numbers = (new Array(6));
my_random_numbers = [undefined, undefined, undefined,
                     undefined, undefined, undefined];

document.write('no_random_numbers<br>');

for (var i in no_random_numbers)
{
    if (no_random_numbers.hasOwnProperty(i))
    {
        document.write(i + '   ' + no_random_numbers[i]);
        document.write('<br>');
    }
}

document.write('<br>');
document.write('<br>');

document.write('my_random_numbers<br>');

for (var i in my_random_numbers)
{
    if (my_random_numbers.hasOwnProperty(i))
    {
        document.write(i + '   ' + my_random_numbers[i]);
        document.write('<br>');
    }
}