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 ↓
One such popular algorithm is the JavaScript insertion sort. This article delves into the intricacies of the insertion sort algorithm, explaining how it works, its advantages, and practical implementation. Whether …
When dealing with the Document Object Model (DOM), developers often need to interact with multiple elements on a webpage simultaneously. This is where the JavaScript NodeList becomes an essential tool. …
In this article, you are going to learn how to rotate an image in JavaScript. In web development, performing images is a simple task. Either you want to display images …
Are you stuck on finding a solution on how to check if a value is a number using isnumeric in JavaScript? Look no further because this article gathered all the needed …
In this comprehensive article, we will explore the ins and outs of the JavaScript one line if statement. We will cover its syntax, use cases, best practices, and how it …
In this article, we will discuss the understanding of semicolons in JavaScript, discuss different scenarios, and analyzing it when and where to use them. One of the questions that usually …
Find out how to use the tostring() method effectively and efficiently in your JavaScript code. In this article, you’ll discover and learn all about the JavaScript tostring() method, which is used to convert …
In this article, you are going to learn how to use short circuit evaluation JavaScript. Mastering different JavaScript methods is necessary to write dynamic and optimized code. One of the …
Are you wondering what is JavaScript Array Destructuring? Well, you should keep on reading! Today, we will delve into the usage and examples of Array Destructuring in JavaScript. So bear …
JavaScript serialization is a fundamental concept in web development that involves the conversion of data structures into a format that can be easily stored, transmitted, and reconstructed. This process plays …
In this article, we will show the structure of the sleep function in JavaScript, discuss its practical applications, and understand its significance in asynchronous programming. One of the simple requirement …
In this article, we will discuss into the complexity of String Filter JavaScript, providing you a complete understanding of its applications and benefits. What is String Filter JavaScript? String filter, …
In this article, you will have to learn how to Check String Prefixes with JavaScript string startswith. One of the valuable function is startswith(), which enables you to check whether …
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();.