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 ↓
Are you ready to embark on a journey of Javascript Breadth First Search (BFS)? A remarkable algorithm that unlocks the secrets of interconnected data structures. In this exploration, we’ll delve …
How to convert date to date string using the toDatestring() method in JavaScript? In this article, you will learn how to transform a Date object into a human-readable string. And …
In JavaScript, working with ranges of numbers is a simple task when handling with different types of programming challenges. A range of numbers represents a sequence of consecutive integers between …
Looking to unravel the magic behind JavaScript’s count method? Look no further! This comprehensive guide will lead you through the enchanting world of counting occurrences and elements within arrays, strings, …
Are you prepared to elevate your JavaScript coding abilities and discover a potent tool that can make your work more efficient? Look right here, because the remarkable findall function in …
How were you going to use the tolowercase() method in JavaScript? Are you ready to unfold the mysterious power of the tolowercase() method? Keep on reading to learn new ideas concerning to tolowercase() method. This article will …
In this article, you are going to learn JavaScript haskey with Methods and Examples. In JavaScript programming, handling objects is an essential aspect of building dynamic and interactive web applications. …
In this article, you are going to learn how to use the JavaScript Thread Sleep with methods and example codes. Asynchronous programming is a core component of JavaScript, allowing developers …
Ever seen videos, maps, and more seamlessly blended into websites? It’s all thanks to JavaScript embedding! Like a trick, it brings external content right onto your page for a dynamic …
Have you ever come across the puzzling timestamp format “yyyy mm ddt00 00 00.000 z” and wondered what it signifies? Well, wonder no more! This intriguing format holds the key …
In the world of JavaScript, the …args syntax holds a unique power-it lets functions handle varying numbers of inputs effortlessly. Think of it as a toolbox for functions, introduced in …
Explore different methods to remove whitespace from string in JavaScript. In this article, we will show you how to use the trim(), replace(), and split() methods effectively. You will learn and understand their different behaviors and …
In this article, let’s discuss how you can use variables as keys in JavaScript objects with some demonstration of example codes. In JavaScript, objects play an important role in representing …
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();.