Dot dotdot dotdotdot as loading?

Question

I wanna create some loading dots, like this:

At 0000 miliseconds the span content is: .

At 0100 miliseconds the span content is: ..

Answer 1

let span = document.querySelector('span');
    i = 0;

setInterval(() => {
    span.innerText = Array(i = i > 2 ? 0 : i + 1).fill('.').join('');
}, 500)