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 ↓
In this article, we will explore 25 JavaScript helper functions that will make your coding task easy and effective. Actually, JavaScript is a versatile programming language and has been altered …
In this article, we will explore JavaScript getComputedStyle, including its syntax, parameters, and return value. Also, this guide provides example programs for the benefit of both beginners and seasoned developers. …
What is the void function in JavaScript, and when to use it? In this article, we will explore the void functions in JavaScript, including what they are, how to use …
In this article, we will discuss JavaScript’s clientHeight property, providing you with not only a theoretical understanding but also practical examples to utilize its power effectively. One of the important …
Are you ready to unfold the secret of the eval() function in JavaScript? In this article, we will discuss the eval() function in JavaScript, including its usage, potential security risks, and alternatives. …
In web development, creating a smooth user experience is predominant. One of the necessary elements that contribute to this experience is a JavaScript contact form. Whether you are a qualified …
Are you wondering which is better to use while working on your JavaScript code, either single quotes vs double quotes? In this article, you’ll understand the difference between JavaScript single …
Are you ready to delve into the dynamic world of JavaScript instances? This comprehensive guide will take you on a journey through the fascinating realm of JavaScript instances. From the …
Are trying to figure out what are the fundamentals of JavaScript? This time we’ll be exploring the intricate art of inserting characters into JavaScrpit string. Technically, JavaScript is an adaptable …
The history.back() method is one such tool that offers a range of tools and functions to enhance user interactions and navigation within web applications. In this exploration, we’ll dive into …
Are you looking for ways to determine if a number is even or odd in JavaScript? Don’t worry, we’ve got you covered! With just a few lines of code, we …
Do you want to know how to search all occurrences in a string or character in JavaScript using the search() method? Read on! Are you ready to explore the power …
In this article, you’ll learn about object literals in JavaScript, including their definition, usage, and examples. You’ll understand the distinction between objects and object literals, and grasp the versatility they …
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();.