JavaScript DataTypes

Javascript Data Types

In JavaScript, you can assign different types of values to a variable e.g. string, number, boolean, etc. JavaScript provides different data types to hold different types of values.

There are two types of data types in JavaScript.

1. Primitive data type

1. String
2. Number
3. Bigint
4. Boolean
5. Undefined
6. Null

2. Non-primitive (reference) data type

1.  An object
2. An array
3.  A date

JavaScript Dynamic type Language

JavaScript is a dynamic type language, means you don't need to specify type of the variable because it is dynamically used by JavaScript engine. You need to use var here to specify the data type. It can hold any type of values such as numbers, strings etc.

Example

1. JavaScript primitive data types

The followings are primitive data types in JavaScript.

2. JavaScript Non-primitive data types

The structural data types contain some kind of structure with primitive data.

let person = { 
                firstName: "Rahul", 
                lastName: "Kumar", 
                age: 30
            }; 

today = new Date("27 May 2023");

let nums = [1, 2, 3, 4];