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 comprehensive guide, we’ll delve deep into the concept of getter and setter functions in JavaScript, providing you with real-world examples and valuable insights. Understanding of JavaScript Getter Setter …
In this article, we will discuss ignorecase in javascript. Whether you are a beginner or a professional developer, these methods and example codes will help you master case-insensitive string operations …
How to push multiple elements in an array of JavaScript using the push method? Read on to discover how to effectively use the push() method in JavaScript to add multiple elements to …
Are you ready to unfold the array join() method in JavaScript and discover how it works? Read on to elevate your coding skills in JavaScript to new heights concerning join in JavaScript. This …
Explore the power of the forEach() method in JavaScript array with our in-depth guide. In this article, you’ll learn how this built-in function can simplify array iteration, making your code cleaner and more …
One of the powerful tools to simplify a complex task is LINQ in short for Language Integrated Query. In this article, we’ll explore the world of LINQ in JavaScript, exploring …
The Observer Pattern is a widely used design pattern in the realm of software development, particularly in JavaScript, that fosters better code organization, flexibility, and maintainability. In this article, we’ll …
In this article, we are going to discuss the JavaScript app development, exploring its benefits, key concepts, and best practices to create dynamic and engaging web applications. Introduction to JavaScript …
One common task developers often encounter is the need to remove quotes from a string in JavaScript. Whether you’re dealing with user inputs, API responses, or any other data source, …
Hi! In this comprehensive guide, we will explore the potential of previousSibling in JavaScript and how it can make your web development journey smoother. Along with this, we’ll cover various …
What is the pop() method in JavaScript, and how to use it to remove the last element from an array? Discover how to manipulate arrays like a pro and boost …
In this article, we will explore the complexity of Infinite Scroll JavaScript with an example, highlighting its benefits, providing a step-by-step implementation guide, and answering common FAQs. User experience plays …
Are you ready to discover the functionality of the indexOf() method with both strings and arrays in JavaScript? In this article, you will learn how it locates the position of a specific …
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();.