JavaScript Step by Step

Chapter 5. Using operators and expressions

After completing this chapter, you will be able to

• Understand the operators available in JavaScript.

• Use JavaScript operators to perform math, equality tests, relational tests, and assignments.

• Use the void operator to open a new window by using a link.

Meet the operators

The ECMA-262 specification defines assorted operators of various forms. These include the following:

• Additive operators

• Multiplicative operators

• Bitwise operators

• Equality operators

• Relational operators

• Unary operators

• Assignment operators

• The comma operator

Operators can be used both on literal values, such as the numeral 10, and on variables and other objects in JavaScript.

Additive operators

The term additive operators includes both addition and ...