Javascript is developed by Netscape. An illusion that must be sacrificed to the altar of knowledge: Javascript and Java have nothing in common. Javascript first name was Livescript, and was changed as a marketing ploy. Even if I much frown on such practices for integrity's sake, I must confess that I find Livescript to be quite lame as names go and am relieved that it's now called Javascript, which definitively has more flair.
Anyway, let's return to our main subject. Javascript is an object-oriented scripting language, which imply that it's a trifle more easy to learn that a "real" programming language. But don't be abused! Even if Javascript is interpreted, even if it's loosely typed, it is a rich and complex language that can do much, much stuff.
Javascript code only survives embedded in HTML document. There's no such thing as a standalone javascript program. As it can only output in HTML document, Javascript doesn't have any graphical properties. But otherwise, the sky's the limit.