Of course, it is easy to learn Javascript.
It is just that, you have to spend a lot of time with Javascript to become a master of it.
You can learn programming while trying to learn Javascript.
In fact, Javascript is one of the easiest ways for getting started with programming.
Javascript doesn't require any set up other the browser and a code editor.
Easy right?
You don't have to be. You can create a lot of components without using Maths.
Even when you have to use maths, all you need is basic understanding of simple mathematical operations such as addition, substraction, multiplication, division, etc.
It depends from person to person. Most can learn it in a month or two.
You just need to understand the concepts clearly and work on real-world projects.