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 unfold and learn all about what is event bubbling and event capturing in JavaScript? In this comprehensive article, you’ll understand how they work, their differences, and …
In this article, we will discuss into bracket notation JavaScript and explore its distinction, applications, and advantages. One of the essential key features is “Bracket Notation“, a method to access …
In this article, we will discuss the concept of JavaScript Implode, explore its applications, and provide practical examples to help you master this powerful function. One of the important function …
Are you looking for a solution to clear an input field in JavaScript? Look no further! In this article, we will show you how to clear an input field using various methods …
Are you tired of looking for solutions on how to use curl in JavaScript? Worry no more because in this article, you’ll learn about curl, a powerful command-line tool for transferring data …
The JavaScript String.append method enables you to add content to an existing string, making it a relevant tool in your coding. As a web developer or striving programmer, understanding how …
One crucial aspect of web development is simulating key presses, which allows developers to automate tasks, create responsive interfaces, and improve user experience. In this article, we’ll dive deep into …
How to achieve encapsulation in JavaScript using closures or classes? In this article, we will show you an example of codes that use encapsulation using both approaches, showcasing private variables and methods …
One such essential function of JavaScript is the sum function. The sum function is used to add up numbers and arrays, making it a versatile and frequently used tool in …
In this article, we will discuss the JavaScript Data Visualization, where we will explore different methods and tools to make data speak in a visually entreating and engaging manner. Understanding …
Are you excited to learn about how to find an index of an object in an array using the findIndex() method in JavaScript? And how it can be used to find the index …
Ticketmaster is a widely used platform for purchasing event tickets online. However, users sometimes encounter a frustrating issue known as “Pardon the Interruption” while trying to buy tickets. This problem …
The “title case in Javascript” is a component that is frequently disregarded yet is critical in presenting content effectively. Moreover, Text capitalization improves readability and offers your website a polished …
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();.