I have always used print debugging, since way before web dev existed. I resort to an actual debugger only occasionally. Some IDEs do have integrated JS runtime

I have always used print debugging, since way before web dev existed. I resort to an actual debugger only occasionally. Some IDEs do have integrated JS runtimes, so you can use a debugger in the IDE. However since JS runs on browsers and devices out of your control that only works up to a point.