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 article, we will explore the concept of JavaScript scrollable, its benefits, and different ways to create scrollable elements using JavaScript. Mainly, scrolling is a fundamental interaction in web …
One of the key features of JavaScript is the hashtag symbol (#), which serves various purposes in the language. In this article, we will explore the meaning of the JavaScript …
In this article, we will explore the concept of Javascript Datetimeformat and discuss various techniques and best practices that developers can use to handle dates and times effectively. When it …
Today, we are going to deal with Javascript check if a function exists on object so that you can avoid any possible errors. Checking if a function exists in JavaScript is …
Wondering why the variable might not have been initialized JavaScript, a Java error message occurred? In JavaScript, when you declare a variable without assigning a value to it, the variable is automatically …
Learn how to use the jszip or the JavaScript zip function to combine multiple arrays into a single array. This article provides easy-to-follow instructions and examples to help you understand and utilize …
JSONPath in JavaScript is a handy tool that allows developers to easily navigate and query complex JSON structures. It provides a simple and concise syntax, making it convenient to work …
In this article, we will explore various techniques to achieve a break from foreach loop in JavaScript and understand the benefits and best practices associated with each method. JavaScript is …
Are you curious about the Javascript double exclamation mark and how it can be used in your code? Look no further! In this comprehensive guide, we will delve into the …
If you are wondering what is Javascript date setDate() and how to use the set date method? You must keep on reading! This article delves into the setDate() method in JavaScript, and we will …
In this article, we’ll talk about why JavaScript comments/commentaire are important and how they help make code easier to read, maintain, and work on together. JavaScript is a key tool …
React developers frequently encounter a common issue: the error message “You need to enable JavaScript to run this app.“ To resolve this problem, there are three potential solutions: Verify that …
In this article, we’ll explore JavaScript heap out of memory error, learn about the causes and consequences of heap out of memory errors, and discover to fix these errors. 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();.