JavaScript Splice vs Slice: Exploring Differences and Use Cases
Are you looking for JavaScript splice vs slice? Also, wondering what’s the difference between splice and slice()? In this guide, you will be able to know what is splice 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 ↓
Master How To Use Javascript Touch Events
Are you wondering what are the JavaScript touch events? Confused what events to trigger in particular touch-enabled devices? In this guide, you will definitely know what are the touch events …
Exploring Two Sum Javascript Efficient Solutions
Do you find it hard to solve two sum JavaScript problem? Are you curious about what is two sum problem? Well since one of the tasks in programming is finding …
How to check the type of object or variable in JavaScript?
Checking the type of object or variable is significant in any programming language, especially in JavaScript. In this article, we will walk you through how to do it using several methods to …
JavaScript Void 0: Exploring the Mysteries and Realities
The term “void” means “empty space” in the dictionary. In programming, when we use this term, it means returning “nothing” or an “empty value“. What is the void keyword? If …
How to check if variable is undefined or null in JavaScript?
Today, we will show you the best ways to check for undefined or null variables or object in JavaScript. By using these solutions, you can improve your JavaScript applications and avoid …
Exploring Advanced Concepts in Volta JavaScript
In web development, staying up-to-date with the latest technologies is important. One of the technologies that has obtained significant popularity in recent years is Volta JavaScript. With its dynamic and …
Wait Function JavaScript: The Ultimate Guide
If you are a developer looking to integrate the effective timing and delays into your JavaScript code, you’ve come to the right place. In this article, we will explore the …
How to check and uncheck checkbox in JavaScript?
In this article, we will discuss how to check and uncheck checkboxes using JavaScript. Explore different methods, including using the checked property, the click method, and jQuery. So, let’s get …
Not Equal In JavaScript | Explore How To Use With Examples
Are wondering how to use not equal in javascript? Confused about the proper symbol to be used in your code? Perfectly, this article is for you! Keep on reading since… …
How to get JavaScript Unix Timestamp | 3 Methods
Are you wondering how to get JavaScript unix timestamp? Are you looking at what JavaScript unix timestamp means? Then, this article is for you! Stay tuned as we cover the …
How to get length of dictionary JavaScript | 3 Methods
In this article, we’ll delve into the concept of dictionary length in JavaScript and its significance in programming. JavaScript is a powerful programming language that provides an extensive set of …
How to split an array into chunks in JavaScript? 3 Ways
Sometimes we encountered situations in JavaScript where you need to split an array into smaller chunks. Splitting an array into chunks can be really helpful. In this article, we’ll explore different ways to …
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.