The top post is just a nonsense meme, and also completely ignores the question, which is about finding tags of a particular kind. In many html parsers, informat

The top post is just a nonsense meme, and also completely ignores the question, which is about finding tags of a particular kind. In many html parsers, information like if a tag is self-closed isn't easy to find (or may even not be stored), so they could at least show how to do what the questioner asks, rather than just mock them.