6.1. Objects

As the name suggests, object-oriented programming is related to objects. So far, we have used objects as loose aggregations of values, adding and altering their properties whenever we saw fit. In an object-oriented approach, objects are viewed as little worlds of their own, and the outside world may touch them only through a limited and well-defined interface, which consists of a number of specific methods and properties.

The Date and Error objects we have seen also work like this. Instead of providing regular functions for working with the objects, they provide a way to create such objects, using the new keyword, and a number of methods and properties that provide the rest of the interface.