Javascript Primitive Data Types

Javascript primitive data types

Created By: chatGPT

In JavaScript, there are seven primitive data types. These data types represent single values and are not objects. Below is a brief overview of each primitive data type.

1. Undefined: A variable that has been declared but not assigned a value is of type undefined.

let x;
console.log(typeof x); // Outputs: 'undefined'

2. Null: This type represents the intentional absence of any object value. It is considered a primitive value.

let y = null;
console.log(typeof y); // Outputs: 'object'

3. Boolean: This type has only two possible values: true and false. It is used for logical operations.

let isActive = true;
let isLoggedIn = false;
console.log(typeof isActive); // Outputs: 'boolean'

4. Number: JavaScript has a single number type, which can represent both integer and floating-point numbers.

let count = 42;
let temperature = -5.1;
console.log(typeof count); // Outputs: 'number'

5. BigInt: This is a relatively new addition that allows representation of integers with arbitrary precision. It's useful for large integers.

let bigNumber = 1234567890123456789012345678901234567890n;
console.log(typeof bigNumber); // Outputs: 'bigint'

6. String: This data type is used for text. Strings can be created using single quotes, double quotes, or backticks.

let greeting = 'Hello, World!';
let name = "John";
let message = `Welcome, ${name}!`;
console.log(typeof greeting); // Outputs: 'string'

7. Symbol: Introduced in ES6, symbols are unique and immutable primitive values that can serve as identifiers for object properties.

const uniqueId = Symbol('id');
console.log(typeof uniqueId); // Outputs: 'symbol'

In summary, these primitive data types provide a way to represent basic values in JavaScript. Understanding them is crucial for effective programming.