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 JavaScript, swapping two variables is a fundamental operation used in various programming scenarios. Whether you’re a beginner or an experienced developer, understanding how to swap variables is crucial for …
Are you ready to take your web experience to the next level? Enter ” javascript:document.body.contentEditable = ‘true’; document.designMode=’on’; void 0,” a powerful JavaScript command that can revolutionize how you interact …
In the fast-paced world of web development, ensuring the reliability and accuracy of your JavaScript code is paramount. This is where the JavaScript test function comes into play. Whether you’re …
One of its important functions is the “.shift in JavaScript” function, which is generally used to employ arrays. In this guide, you are going learn the complexity of the shift …
What is the .charAt() method in JavaScript, and how to use it? In this article, you’ll learn about the charAt() method, which allows you to retrieve specific characters from a …
One of the method that plays an important role in obtaining this action using JavaScript set CSS variable. This method allows developers to change CSS properties on-the-fly, providing more flexible …
Are you looking for solutions on how to repeat string in JavaScript using .repeat() method? Here’s the perfect documentation for you! In this article, we will delve into the JavaScript String .repeat() …
One of the methods is the JavaScript ternary operator, a powerful tool that shortens conditional statements into a compact form. In this article, we will discuss in detail the ternary …
Explore seven (7) effective ways how to check for empty objects in JavaScript. Master the art of checking if an object is empty in JavaScript using built-in methods like Object.keys() and …
“Reduce unused JavaScript” is a crucial practice in optimizing websites and web applications to enhance performance and user experience. So by the end of this article, we will know what …
In this comprehensive guide, we’ll dive deep into the Replacechild JavaScript method, a powerful tool that enables you to replace one element with another in the DOM. Technically, it is …
One of the functions of Javascript is Math.trunc, which allows developers to truncate numerical values to their integer part. By the end of this article, we will know what is …
In this article, we will show you how to sort an array using the sort() method in JavaScript. We often come across situations where we need to arrange data in a …
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();.