Javascript Data Types

Javascript data types

Created By: chatGPT

JavaScript is a dynamic and versatile programming language that supports several fundamental data types. Understanding these data types is essential for effective coding. Below are the primary data types you will encounter: Primitive Data Types are the most basic types of data in JavaScript. They include:

1. Number: Represents both integer and floating-point numbers. For example:

let age = 30;
let price = 19.99;

2. String: Represents a sequence of characters enclosed in single or double quotes. For example:

let name = 'John';
let greeting = "Hello, world!";

3. Boolean: Represents a logical entity and can have two values: true and false. For example:

let isJavaScriptFun = true;
let isOver18 = false;

4. Undefined: A variable that has been declared but has not yet been assigned a value is of type undefined. For example:

let notAssigned;
console.log(notAssigned); // Outputs: undefined

5. Null: Represents the intentional absence of any object value. For example:

let emptyValue = null;

6. Symbol: Introduced in ES6, symbols are immutable and unique and can be used as object property keys. For example:

let sym = Symbol('description');

7. BigInt: Used for representing integers with arbitrary precision. This is useful for working with large numbers. For example:

let bigNumber = 1234567890123456789012345678901234567890n;

Non-Primitive Data Types include:

1. Object: A collection of key-value pairs. Objects can store multiple values and complex data structures. For example:

let person = {
    name: 'John',
    age: 30,
    isStudent: false
};

2. Array: A special type of object used to store ordered collections of values. Arrays can hold multiple data types. For example:

let colors = ['red', 'green', 'blue'];

Each data type plays a crucial role in how data is manipulated and stored in JavaScript. Knowing the differences between these types helps in writing efficient and effective code.