JavaScript Objects in Detail

»jan. 27 2013 169

JavaScript’s core—most often used and most fundamental—data type is the Object data type. JavaScript has one complex data type, the Object data type, and it has five simple data types: Number, String, Boolean, Undefined, and Null. Note that these simple (primitive) data types are immutable (cannot be changed), while objects are mutable (can be changed).

Bov Academy

of Programming and Innovation

Become an Elite/Highly Paid Specialized Software Engineer (Frontend, Fullstack, etc.)

Within 8–10 Months, Earn MORE than the Avg. New CS Graduate Earns.

45%-Off Tuition for the December Session

By the founder of JavaScriptIsSexy

What is an Object
An object is an unordered list of primitive data types (and sometimes reference data types) that is stored as a series of name-value pairs. Each item in the list is called a property (functions are called methods).

Consider this simple object:

var myFirstObject = {firstName: "Richard", favoriteAuthor: "Conrad"};

Think of an object as a list that contains items, and each item (a property or a method) in the list is stored by a name-value pair. The property names in the example above are firstName and favoriteAuthor. And the values are “Richard” and “Conrad.”

  • Receive Updates

Continue Reading