I think you miss the point. Some tools are made for precision while others are made for maximum functionality. The scalpel vs the Swiss Army Knife if you will.
Javascript is horrible in many ways. It really wasn't even designed per se. It's just a mismash of hacks that Netscape put together with a few more hacks tacked on after the fact. But while that makes it messy it also makes it amazingly flexible.
That's why it's become so popular.