JavaScript is the only language that runs natively in every web browser, making it essential for any web-based BSIT capstone, modern web application, or interactive site. This hub collects free JavaScript tutorials from basic variables and functions through modern ES6+ features, DOM manipulation, async programming, and integration with REST APIs.
What you’ll learn in the JavaScript tutorial series
Core fundamentals: variables (let/const), data types, operators, conditionals, loops
Functions: declarations, expressions, arrow functions, closures, callbacks
DOM manipulation: selecting elements, modifying content, event handling
ES6+ features: destructuring, spread/rest, template literals, modules
Async programming: Promises, async/await, fetch API, error handling
Array methods: map, filter, reduce, find, forEach (functional programming patterns)
Object-Oriented JavaScript: classes, prototypes, inheritance, getters/setters
Modern tooling: npm, webpack/Vite, ESLint, Prettier
Why every BSIT student should know JavaScript
JavaScript is unavoidable in modern web development, it’s the only language browsers natively execute. Even capstones built on PHP + MySQL back-ends need JavaScript for client-side validation, AJAX form submissions, dynamic UI updates, and modern interactive features. Beyond browsers, Node.js lets you write server-side JavaScript too, opening up the entire MEAN/MERN/MEVN stack family.
JavaScript vs TypeScript: which should I learn?
Start with JavaScript first to understand the core language. Once you’re comfortable, TypeScript is a superset that adds optional static typing, it catches more bugs at compile time and is the modern standard for large React/Vue/Angular projects in 2026. Most BSIT capstones can use either; pick TypeScript if your panel values type safety and modern best practices.
Related JavaScript resources
JavaScript Projects, 55+ downloadable JS capstones
React Projects, JS framework for modern UIs
Vue.js Projects, alternative front-end framework
Node.js Projects, server-side JavaScript
TypeScript Tutorial, add types to your JS
AJAX Projects, async API patterns
Scroll down to browse the full JavaScript tutorial catalog ↓
As a JavaScript developer, understanding named functions is crucial. It’s a fundamental building block that plays a significant role in programming. In this article, we will explore the concept of …
Are you looking for solutions on how to split a string into an array in JavaScript? Discover the different ways to split a string into an array of substrings. This …
Learn how to use the typeof operator within an if statement in JavaScript to check the type of a value before performing an operation on it. This article provides clear explanations and examples to …
One of the important aspect of web development is handling user input, especially keyboard events. The “onkeyup” event in JavaScript plays an important role in assimilating and processing keyboard input …
Sorting objects by property is a simple requirement in many JavaScript applications. If you are working on an uncomplicated to-do list or a confusing data-driven application, perceptive how to sort …
Is JavaScript similar to Java? Well, in this article you’ll know What’s their differences. Explore the key differences between Java and JavaScript, two popular programming languages with similar names but …
There are instances where we have to convert the string to a boolean in JavaScript. In this article, we’ll explore various methods for converting string values into boolean (true or false) …
In this article, we’ll take you on a journey through the world of Javascript sprintf. We’ll start with the basics, exploring format specifiers and their corresponding data types. From there, …
JavaScript Winston is a special logging library that offers developers with powerful tools to handle logging smoothly. In this article, you are going to learn how to use Winston JavaScript, …
Have you ever wondered how developers track down bugs and ensure smooth execution of web applications? Enter “Print var JavaScript” -a simple yet powerful concept that empowers developers to display …
In this article, we’ll cover the JavaScript translate() method, guiding you through its usage and demonstrating how it can transform your web development projects. Get ready to explore a realm …
Find out the different methods to achieve JavaScript float to int conversion effectively. Do you want to know how to convert float numbers to integers in JavaScript? All you have to do is …
In this article, we will understand the concept of camelCase in JavaScript, its importance, best practices, and provide practical examples. Whether you are a professional developer or just a beginner, …
async and await are modern JavaScript syntax for working with Promises (asynchronous operations like fetching data from an API). Old callback-based code becomes deeply nested ("callback hell"). Promises improved this. async/await makes asynchronous code read like synchronous code, much easier to follow. Essential for any modern web app that talks to a server: const response = await fetch('/api/users'); const data = await response.json();.