Why is Javascript terrible?

Not a troll thread - yeah, I know, what a surprise! I've done some quick googling and most of what I read was that Javascript was/is a horrible kludge and should have never existed. I haven't done any real work with the language, and regardless of what is said, I'll probably check it out. However, I wanted some opinions on it, such as what could have been improved in the language, any design flaws, what I should look out for (any brain-damaging 'gotchas') while learning, etc.

Thanks /progologologloglogloglogloglo

What does it matter what anyone else here has to say? I doubt even 4 of the 5 people who post here are real programmers.