JavaScript Classes

What are Classes?

Classes are blueprints for creating objects. They define properties and methods that objects will have.

``` ┌─────────────────────┐ │ Class │ │ (Blueprint) │ │ ┌───────────────┐ │ │ │ Properties │ │ │ │ Methods │ │ │ └───────────────┘ │ └──────────┬──────────┘ │ │ new ClassName() │ ┌───────────▼───────────┐ │ Object │ │ (Instance) │ └───────────────────────┘ ```

Class Syntax

```javascript class User { constructor(name, email) { this.name = name; this.email = email; } greet() { return `Hello, ${this.name}!`; } }

const user = new User('John', 'john@example.com'); user.greet(); // "Hello, John!" ```

Inheritance

```javascript class Admin extends User { constructor(name, email, role) { super(name, email); this.role = role; } deleteUser() { return 'User deleted'; } } ```

Key Takeaway

Classes create object blueprints. Use constructor for initialization. Extend classes for inheritance. Classes make code organized and reusable.