JavaScript: Functional Programming for JavaScript Developers

JavaScript's object-oriented implementation – using prototypes

JavaScript is a class-less language. That's not to mean it is less fashionable or more blue-collar than other computer languages; class-less means it doesn't have a class structure in the same way that object-oriented languages do. Instead, it uses prototypes for inheritance.

Although this may be baffling to programmers with backgrounds in C++ and Java, prototype-based inheritance can be much more expressive than traditional inheritance. The following is a brief comparison between the differences between C++ and JavaScript:

C++	JavaScript
Strongly typed	Loosely typed
Static	Dynamic
Class-based	Prototype-based
Classes	Functions
Constructors	Functions
Methods	Functions