There are dozens of tooltip libraries in the world of javascript. But this one solves the problem for people who write their webapps using Vuejs framework.
For those who also didn't know about liquid air: "Liquid air is air that has been cooled to very low temperatures (cryogenic temperatures), so that it has condensed into a pale blue mobile liquid. To protect it from room temperature, it must be kept in a vacuum insulated flask." (c) Wiki