Yeah, once you learn Javascript, other languages will definitely be easier to learn. Stick with it, since you're already doing it and working with web development. I just wouldn't recommend it to someone who never picked up programming and was asking for a place to start since it uses a form of object orientation (prototypical) that is different than what most other languages use (classical). It also has a lot of interesting quirks. It'll just take a little while to really wrap your mind around prototypical inheritance on a deep level and to also understand that everything is an object. What's so bizarre about that is you can create an array like this:
var test = [1,2,3,4];
but since an array is actually an object, you can assign it properties and methods. Here I'm giving it a simple method to multiply two numbers:
test.multiply = function(x,y) {return x*y;};
and then you can call it to multiply two elements inside of it's own array
test.multiply(test[2], test[0]);
The fact that nearly everything, including functions and arrays are types of objects lets you do things like that.