No, it's not. Any technology can be misused.
All in all, JavaScript is pretty neat and I am damn impressed with what people are building with it these days.
Javascript is fun, its creative and its the first language I learnt.. With the rise of language like html5, I think internet is alright. Javascript has not destroyed the internet, it has helped nurture it at the time when the internet needed some.
Agreed, once upon a time JS wasn't good for very much more than pop up windows and mouseovers. Now, in the past 15 years it has come such a long way. It has really made everything much more dynamic.