What is Generator next() Method in JavaScript?
Today, we will explore the next() method in JavaScript’s Generator object. Keep reading to learn how it controls the execution of a generator function and understand its syntax, parameters, and …
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 ↓
String ReplaceAll() Method in JavaScript With Regex
Are you ready to master the power of the string replaceAll() method in JavaScript? In this article, you’ll learn how to use it with both strings and regular expressions (regex), along with examples …
Mastering the Art of Capturing JavaScript Screenshots
In this article, we will discuss the ins and outs of this engaging topic, providing you with the knowledge and tools needed to excel in this domain. Where visual content …
How to Remove Special Characters from a String in JavaScript?
If you want to remove special characters from a string in JavaScript, read on to learn new insights. In this article, we will discuss about what constitutes special characters in JavaScript and …
6 Ultimate Solutions to Remove Character from String in JavaScript
Today, we are going to show you different ways to remove characters from a string in JavaScript. You’ll learn six different methods to remove characters from strings. Each method is …
Phone Number Validation in JavaScript Using Regex
Are you excited to explorephone number validation in JavaScript? Ensuring phone numbers is important in every aspect. In this article, we’ll explain how to validate phone numbers straightforwardly using JavaScript …
JavaScript in Data Science: Significance, Applications, & Libraries
In this article, we will delve deep into the world of JavaScript in data science, exploring its significance, applications, and libraries along with determining if we can use JavaScript in …
JavaScript Crop Image Your Ultimate Guide
In this comprehensive guide, we will delve deep into the art of JavaScript image cropping, exploring various techniques and insights to help you master this skill. So, without further ado, …
How to Remove the Focus From an Element Using JavaScript?
Are you ready to discover how to remove focus from an element using JavaScript? In this article, you’ll discover how to control focus on your web pages using JavaScript. We will …
Master How JavaScript Check If Date Is Valid?
In this comprehensive guide, we will delve into the world of JavaScript and discover how to check if a date is valid using this versatile programming language. Before we get …
Exploring the setTimeout() method in JavaScript with Examples
Do you want to explore and learn what is the setTimeout() method in JavaScript? Read on! This article will show you how to use the setTimeout() method for delayed code …
Best Practices for Implementing LaunchDarkly JavaScript SDK
Welcome to the world of LaunchDarkly JavaScript SDK. If you are a developer or tech support, you’ve probably heard of the term “feature flags” and how they can transform software …
Acorn JavaScript with Example Code
Acorn JavaScript is a functional and powerful tool for developers seeking to improve their web development skills. Whether you are a experience programmer or just starting your coding journey, this …
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.