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 JavaScript continues to gain popularity among developers, will JavaScript containers overtake Linux containers? We will answer this question below. You just have to keep on reading! This article explores the …
In this article, we will explore the concept of HashSet in JavaScript, explore how to use it, and differentiate other key terms. Whether you’re a seasoned JavaScript developer or just …
In JavaScript programming, working with arrays is a typical task for web developers. There are times when you need to find the simple elements between two arrays, which can be …
This article will explore the power of object destructuring and renaming properties in JavaScript! Learn how to extract values and rename properties with ease, just keep on reading! Let’s explore a …
Are you looking for a way to get the first Monday of a month using JavaScript? Look no further! In this article, we’ll show you how to do it with …
This article will show you how to make an auto clicker in JavaScript and uncovers its potential for automating different tasks. Automate mouse clicks on any element or button with ease. Start …
In this article, we will delve into different approaches for effectively exit a JavaScript function. There are times that we have to exit a function while we are still working in …
Today, we are going to explore JavaScript Date Formatting with strftime. Knowing how to format dates properly is dominant for making applications that are dynamic and easy for users to …
In this article, we will show you the concept of Dompurify and learn how to use it effectively in JavaScript to protect against Cross-Site Scripting (XSS) attacks. We will include …
In this article, we will explore how to format dates in JavaScript using the “yyyymmdd” format. In fact, one of the common tasks that developers often encounter is formatting dates …
One common task that web developers often encounter is retrieving the current year using JavaScript. In this guide, we will explore various methods and techniques to obtain the current year …
If you are wondering how to say I love you programmatically, especially in JavaScript. Well, this article got your back! Discover the creative and unique ways to express your love through …
Printing an array in JavaScript is a common task that developers often encounter. Arrays are a fundamental data structure in JavaScript, allowing you to store and manipulate multiple values in …
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();.