If you're trying to learn JavaScript, W3Schools is a good site to use. It's somewhat tricky to navigate, but it works pretty well as a reference.

So far I've learned several languages in college, some of which I've grown to dislike (PHP and Bash) and some I'm pretty comfortable with (Java and JavaScript). I'm also attempting to teach myself Lua for game programming. My favorite so far is JavaScript. Sure, it has some annoyances (like the lack of a good wait function), but it's simple and has fairly clean syntax. PHP, on the other hand, is my least favorite because of its horribly bad design and numerous inconsistencies.