An object is just a special kind of data, made up of properties and methods. Properties are the things that an object knows about itself, while methods are the things that the object knows how to do. For example, the Window object in JavaScript has properties, like window.status , which can be read and set. By setting the status property of the Window object to a string, it makes that string appear in the window's status bar. If this stuff is unfamiliar to you, you should probably read Part I, Day 5 for more details.
Objects provide a great way to organize information.
First, we deal with real-life objects all the time. A monkey, for example, is an object. Its properties include height, weight, furriness, and sassiness. All monkeys have the same set of properties. It's the values of those properties that makes one monkey different from another.