Chapter 3. Operators and Statements

The examples in the book so far have performed mostly simple tasks: a variable has been defined and its value set; a value is printed out in the page or in an alert window; a variable is modified through addition or multiplication or some other means. These all use JavaScript statements and operators.

There are a number of different types of statements in JavaScript: assignment, function call, conditional, and loops. Each is fairly intuitive, simple to use, and quick to learn. A snap, really. As with with most programming languages, in JavaScript the statements are easy to learn; the tricky part is lining them up, one after the other, so they do something useful.

This chapter takes a closer look at statements and operators, what they share, and how they differ.