Sorry for being terribly pedantic, but the "vanilla" version just does not do what the jQuery code does:

- `this` might not be document

- find might return multiple elements, not just one

- if nothing matches, jQuery does not throw unlike the vanilla version

I do understand it's just an example, but if you'd consider all the implicit cases the jQuery example covers, you'd end up with a lot more than a single line. I see your point, but using off examples like this don't really sell it too well.