JavaScript

JavaScript is a high-level, interpreted programming language that has become the cornerstone of modern web development. Created by Brendan Eich in just 10 days in 1995 while working at Netscape, it was initially designed to add interactivity to web pages by manipulating HTML and CSS elements directly in the browser.

Today, JavaScript powers dynamic user interfaces, asynchronous operations via features like promises and async/await, and even server-side applications through environments like Node.js. Its versatility extends to mobile apps, games, and APIs, supported by a vast ecosystem of libraries and frameworks such as React, Vue.js, and Express.

As one of the most popular languages worldwide, according to surveys like Stack Overflow’s, JavaScript continues to evolve with standards like ECMAScript, making it essential for developers aiming to create responsive, engaging digital experiences.

Basic

• Introduction to JavaScript: What it is, how it works in browsers and Node.js.
• Output Methods: Using console.log(), alert(), and document.write().
• Variables: Declaring with var, let, and const.
• Data Types and Type Conversion:
• Primitive types (numbers, strings, booleans) and non-primitive (objects, arrays).
• Operators: Arithmetic, assignment, comparison, and logical operators.
• Comments and Clean Code Practices.
• Conditional Statements: if, else, else if, and switch. Loops: for, while, do…while, break, and continue.
• Basic Functions: Declaring, calling, parameters, and return statements.
• Arrays: Creating, accessing, and basic methods like push, pop, shift, unshift.
• Objects: Creating and accessing properties.
• Basic DOM Manipulation: Selecting elements and simple event handling.

Intermediate

• Advanced Functions: Arrow functions, callbacks, self-invoking functions, and higher-order functions. Scope, Hoisting, and Closures.
• Array Methods: map, filter, reduce, and looping through arrays (e.g., forEach).
• Object Advanced: Nested objects, the this keyword, object methods, and looping (e.g., for…in).
• ES6+ Features: Template literals, destructuring, spread/rest operators, default parameters, and modules (import/export).
• Asynchronous JavaScript: Callbacks, promises, and async/await.
• Error Handling: try…catch and custom errors.
• DOM Manipulation: Selectors, styling elements, events and event listeners, creating/appending/removing elements.
• Prototypes and Inheritance Basics. Functional
• Programming Concepts: Introduction to pure functions and immutability.

Advanced

• Deep Dive into ES6+: Advanced usage of let/const/var, modules, and new syntax features.
• Advanced Asynchronous Programming: Handling multiple promises, fetch API, and error management in async code.
• Closures and Memory Management: In-depth understanding and applications. Prototypes, Inheritance, and the this Keyword in Complex Scenarios.
• Functional Programming: Advanced use of map, reduce, filter, and composing functions.
• Performance Optimization: Techniques for efficient code, profiling, and avoiding common pitfalls.
• Web APIs: Working with localStorage, sessionStorage, Canvas, or Web Workers.
• Design Patterns: Singleton, module, observer, etc.
• TypeScript Introduction: As a superset for type safety in JavaScript projects.
• Security Concepts: Understanding XSS, CSRF, and secure coding practices.