JavaScript is a versatile, high-level programming language primarily used for web development. It enables dynamic and interactive content on websites and is also used for backend development with frameworks like Node.js. Here's a detailed breakdown:
1. JavaScript Basics
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Syntax & Structure – Variables, data types, operators.
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Control Flow – Conditional statements (if, switch) and loops (for, while).
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Functions – Defining and calling functions, function expressions, arrow functions.
2. Object-Oriented Programming (OOP)
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Objects & Prototypes – JavaScript uses prototype-based inheritance.
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Classes & Constructors – ES6 introduced class syntax for object-oriented programming.
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Encapsulation & Polymorphism – Managing object properties and behaviors.
3. Asynchronous Programming
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Callbacks – Functions passed as arguments for asynchronous execution.
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Promises – Handling asynchronous operations with .then() and .catch().
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Async/Await – Simplifies asynchronous code execution.
4. JavaScript in Web Development
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DOM Manipulation – Accessing and modifying HTML elements dynamically.
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Event Handling – Listening for user interactions (click, keydown, etc.).
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AJAX & Fetch API – Making asynchronous HTTP requests.
5. JavaScript Frameworks & Libraries
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React.js – Component-based UI development.
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Vue.js – Progressive framework for building user interfaces.
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Angular – Full-featured framework for enterprise applications.
6. Advanced JavaScript Features
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Closures – Functions retaining access to their lexical scope.
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Higher-Order Functions – Functions that take other functions as arguments.
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Modules – Import/export functionality for better code organization.
7. JavaScript for Backend Development
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Node.js – JavaScript runtime for server-side applications.
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Express.js – Lightweight framework for building APIs.
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Database Integration – Using MongoDB, PostgreSQL, or MySQL with JavaScript.