The JavaScript Language

JavaScript was created to reflect the syntax of Java, so some of the keywords will be familiar. As noted earlier, JavaScript is an evolving language. Check Netscape’s specifications for the latest changes and additions.

JavaScript is built on three basic building blocks:

• Values The data types supported by JavaScript, including numbers, logical, strings, and null.
• Objects A named container for a collection of properties (values). Can also be made up of other objects.
• Functions Procedures that an application can perform. The functions associated with a particular object is that object’s method.