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

With String.prototype.repeat() you can do:

var element = document.querySelector(...);
var counter = 0;

var intervalId = window.setInterval(function() {
    counter += 1
    element.innerHTML = '.'.repeat(1 + counter % 3)
}, 350);

// Use the following to clear the interval
window.clearInterval(intervalId)

Note: String.prototype.repeat() is currently not supported in < IE11