Value Types in JavaScript ​

In JavaScript, a piece of information is a value. There are different kinds of values. The kind you're most familiar with are numbers. A string value is characters - such as a word or words - enclosed in quotes. These kinds of JavaScript values are listed in the table below.

Type

Description

Example

Number

Any numeric value

3.141592654

String

Characters inside quote marks

"Hello, world!"

Boolean

True or False

true

Null

Empty and meaningless

Object

Any value associated with the object

Function

Value returned by a function