JavaScript is a scripting or programming language that allows you to implement complex features on web pages — every time a web page does more than just sit there and display static information for you to look at — displaying timely content updates, interactive maps, animated 2D/3D graphics, scrolling video jukeboxes, etc. — you can bet that JavaScript is probably involved.
An operator, in computer programing, is a symbol that usually represents an action or process. These symbols were adapted from mathematics and logic.more info
A method defines the behavior of the objects that are created from the class. Another way to say this is that a method is an action that an object is able to perform. Methods associated with this class could consist of things like walking and driving. Methods are sometimes confused with functions, but they are distinct.