How to fix a deprecated name in JavaScript?
Are you tired of seeing warnings about deprecated names in your JavaScript code? Keep on reading! This article will show you how to fix this issue and improve the compatibility …
JavaScript Tutorial 2026: Free ES6+ Beginner to Advanced
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 ↓
How to create ul li in JavaScript
In web development, JavaScript plays an important role in improving the functionality and interactivity of websites. One of the frequent tasks that developers often encounter is creating an unordered list …
How To Implement JavaScript Pointer Effectively
Do you know how to utilize JavaScript Pointer? In this article, we will explore the concept of JavaScript pointers and how they can be utilized to enhance your coding skills. …
What is the used of JavaScript P?
Unfold the secrets of JavaScript P in this detailed article. Don’t miss out on this essential knowledge. Keep on reading! Explore its meaning, usage, and relevance in the coding world. Let’s get …
Exploring the Usage of the LayerX property in JavaScript
In this article, we will discover the intricacies of the layerX property in JavaScript. A non-standard feature that returns the horizontal coordinate of an event relative to the current layer. …
Subclassing in JavaScript | Implementation and Examples
What does subclassing in JavaScript mean? How to implement sublass in JavaScript projects? In this article, we will explore the concept of subclassing and present how to implement subclass with …
How To Use Resolve JavaScript | Learn with Examples
What is resolve() function in JavaScript? Do you how to use resolve method in JavaScript? In this article we will explore the concept of resolve function, and how to implement …
How to print nested object in JavaScript
One of the simple tasks in JavaScript is to print the contents of a nested object. In this article, you will have to learn how to print nested object in …
How JavaScript Set Cursor Position In Input
When working with input fields, you might come across situations where you need set JavaScript cursor position in input field. This can be useful for automating form interactions, implementing autocomplete …
What are the cool things to do with JavaScript?
If you’re asking what are the cool things to do with JavaScript on a website. Well, you’ll see a vast of it. JavaScript offers numerous exciting possibilities! JavaScript is a …
How to Fix Deprecated in JavaScript
As the technology emerge, several features and methods in JavaScript become deprecated. Deprecated features are those that have been phased out and are no longer supported for using in modern …
How to Concat Array of Objects in JavaScript
In this article, we will show you how to concatenate arrays of objects in JavaScript. By combining several arrays into a single array, we can perform different operations effectively. What …
How to Create a Grocery List in JavaScript?
Discover how to create a simple and interactive grocery list using HTML, CSS, and JavaScript. This step-by-step tutorial will guide you through the whole process of building a functional grocery list …
Frequently Asked Questions
Do I need to learn JavaScript before React or Vue?
Yes, solid JavaScript fundamentals are essential before tackling frameworks. Spend at least 4-8 weeks on core JS (variables, functions, arrays, objects, DOM, async) before touching React, Vue, or Angular. Jumping straight to a framework without knowing the underlying language leads to copy-paste developers who can't debug or extend their code, panels notice this in defense. ES6+ syntax (arrow functions, destructuring, spread/rest) is mandatory before frameworks.
What's the difference between var, let, and const?
var is the old (pre-2015) way to declare variables, function-scoped, hoisted, can be redeclared. Avoid in modern code. let is block-scoped, can be reassigned, can't be redeclared in the same scope. Use for variables whose value will change. const is block-scoped, can't be reassigned. Use by default; switch to let only when reassignment is needed. Rule of thumb: const by default, let when needed, never var.
What's async/await and why does it matter?
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();.How do I run JavaScript outside a browser?
Install Node.js (free, cross-platform from nodejs.org), it's a JavaScript runtime that lets you execute .js files from your terminal. Use cases beyond browsers: server-side web apps (Express, Fastify, NestJS), command-line tools, build tooling (webpack, Vite), desktop apps (Electron), testing scripts (Jest, Playwright). Browse our Node.js Projects for server-side examples.
Should I learn TypeScript instead of JavaScript?
Learn JavaScript first, then add TypeScript when you're comfortable. TypeScript is JavaScript with optional static typing, it catches more bugs at compile time but adds complexity. For 2026 capstones using React/Vue/Angular, TypeScript is increasingly the standard. For pure jQuery or vanilla JS capstones, TypeScript is overkill. See our TypeScript Tutorial when you're ready.
What can I build with JavaScript for my capstone?
Browser-only capstones: games (Tic-Tac-Toe, Hangman, Memory, Flappy Bird), calculators and converters, interactive dashboards with Chart.js. Front-end + back-end (full-stack): MERN stack capstones (React + Express + MongoDB), real-time chat apps with Socket.io, e-commerce front-ends consuming a PHP back-end. Browse our JavaScript Projects for examples.