Data Types in JavaScript

In this tutorial, we will learn about Data Types in JavaScript. The data type of a variable simply tells us what kind of data that variable can store and how much size of data it can hold. Java Script provides us with a variety of Data Types we will learn about these data types.

Primitive data types:

Data Type Description
String Represents a sequence of characters e.g. “hello”
Number Represents numeric values e.g. 100
Boolean Represents boolean value either false or true
Undefined Represents undefined value
Null Represents null i.e. no value at all

Non-primitive data types:

Data Type Description
Object Represents instance through which we can access members
Array Represents a group of similar values
RegExp Represents regular expression
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