JavaScript

JavaScript is the language of the web. Every interactive page you have ever visited — a dropdown menu, a live search box, a chat window — is powered by JavaScript running right inside your browser. You do not need to install anything: it is already there.

What you will learn

• Core language fundamentals: values, variables, operators, and control flow.
• Functions — how to define, call, and compose them.
• Arrays and objects — the two data structures you will use every day.
• Built-in helpers for strings, numbers, dates, and math.
• Functional patterns: map, filter, reduce, and recursion.
• Object-oriented programming with ES6 classes and inheritance.
• Asynchronous JavaScript: callbacks, Promises, and async/await.

Course outline

1. Introduction — what JavaScript is, how to run it, data types, and type checking.
2. Variables and Operators — var, let, const, arithmetic, comparison, logical operators, and type conversion.
3. Control Flow — if/else, switch, for, while, do-while, break, and continue.
4. Functions — declarations, parameters, return values, arrow functions, scope, and closures.
5. Arrays — creation, indexing, mutation methods, search/slice, iteration, multidimensional arrays, and destructuring.
6. Objects and Built-ins — object literals, methods, JSON, Math, and Date.
7. Strings and Regular Expressions — string methods, template literals, and regex patterns.
8. Functional Programming — higher-order functions, callbacks, map/filter/reduce, and recursion.
9. Object-Oriented Programming — ES6 classes, inheritance, and encapsulation.
10. Asynchronous JavaScript — event loop, callbacks, Promises, and async/await.

After this course, continue with a dedicated JavaScript DOM course to learn browser interactivity, or move into Node.js and frameworks like React.