I've seen the term "Low level Javascript" come up a few times but I've no idea what it means. Google shows no results surprisingly. Can someone shed some light on it?
I would say it is "javascript without using cross-browser frameworks" such as jQuery or YUI.
Can be particularly tricky when it comes to supporting multiple browsers.
I suppose it means Javascript without any framework such as prototype/jQuery/YUI, which help with cross-browser compatibility, and generally provide a lot of useful functions, so you don't have to spend your time re-inventing the wheel.
Also, maybe it has something to do with the "new" way of doing Javascript -- i.e. object-oriented, using Frameworks, ... In opposition to the crappy code we used to seen a couple of years ago.
Sometimes people make up their own terms when they shouldn't. "Low level Javascript" is one of them. There's nothing "low level" about Javascript. It's interpreted at run-time inside an environment of high-level abstractions, like the DOM.