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

.

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Or you can get fancy and have them go forward and back:

.

Or you could make them go back and forth randomly:

.

Or I could get a life and stop posting additional snippets.... :D

As Ivo said in the comments, you need to clear the interval at some point, especially if you are not loading a new page after the waiting is finished. :D