Explain different data types used in JavaScript. (12)

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Explain different data types used in JavaScript.

Data types basically specify what kind of data can be stored and manipulated within a program. JavaScript provides different data types to hold different types of values. There are two types of data types in JavaScript.

a)      Primitive data types

b)      Non-primitive (reference) data types

Primitive Data Types

Primitive data types can hold only one value at a time. There are five types of primitive data types in JavaScript. They are as follows.

Data Types

Description

String

It represents sequence of characters. Eg. “Hello”

Number

It represents numeric values. Eg. 12

Boolean

It represents Boolean value either false or true

Undefined

It represents undefined value

Null

It represents null, ie, no value at all

Non Primitive Data types

Non-primitive data types can hold collections of values and more complex entities. The non-primitive data types are as follows.

Data Types

Description

Object

It represents instance through which we can access members

Array

It represents group of similar values

RegExp

It represents regular expression

 

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