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 ↓
One of the essential concepts in data handling is the “average.” Whether you’re a beginner or an experienced developer, understanding the intricacies of calculating averages in JavaScript is crucial. In …
In this article, you are going learn to use the MD5 hashes in JavaScript. The MD5 hash function was originally created as a secure cryptographic algorithm to authenticate digital signatures. …
Are you having a hard time with how to add an ID to an Element using JavaScript? Well, this article is indeed for you! In this article, you’ll be able …
In this article, we will discuss the JavaScript rhino, providing an example of codes, understanding, and expert knowledge to help you unleash the full ability of Rhino in your projects. …
In this article, we are going to show you how to add a key to an object in JavaScript with this comprehensive guide. Get the solutions here and use them …
JavaScript is a powerful programming language that has revolutionized web development. One of its key features is the ability to control the appearance of web elements dynamically. In this article, …
In this article, we’ll unveil the secrets of JavaScript dotenv and guide you through its simple integration into your projects. Discover how to effortlessly install the package, create your .env …
In this article, we will discuss into the Protobuf JavaScript, exploring its advantages, implementation, and its use cases. In the web development, dynamic data serialization is important for increasing the …
In the world of web development, JavaScript is an indispensable programming language. One common task developers encounter is extracting the last character from a string. While it may seem like …
Today will equip you with the knowledge of how to dynamically add options to a select element in JavaScript. When it comes to web forms, the <select> element is a …
In this article, we will discuss the JavaScript rest parameters and explore the functionality, use cases, and how they increase the flexibility of functions. The rest parameter syntax enables a …
Are you having trouble adding rows to an HTML table dynamically using JavaScript? Worry no more because, in this article, we will walk you through the whole process of how …
How do I append an array to another array in an easy way in JavaScript? Well, in this article, we will hand you the solutions for that. You just have …
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();.