What would you do if a dog attacked you and the owner or nobody did anything to stop it?

A dog that will bite a person is no good and I think they should be eliminated. If he did hurt you, then call animal control or the police. That dog if loose will do it again.So if you have to keep walking by there, take a golf club or ball bat.

Carry a small can of mace

That happened to me at a dog park. I went to the hospital and got stitches. And the police showed up later to take my report.

Almost?
Are you sure it was attack?

I’d call the cops and have animal control come and take Max.

Refuse to sleep with the dog’s owner anymore.

I would kill it and sue the owner. As for you, if you are in the US, you can lodge a complaint about the dog and the city will send someone out to investigate and give the owner a warning

shoot it then sue owner into oblivion...

I would kill the dog and present it's corpse back to the owner then tell the police what had happened,followed by legal action against the dog owner.

Let the dog bite, go to the hospital, and sue the owner for expenses.