How to Remove an Item from Cart in JavaScript
When it comes to e-commerce websites, the shopping cart plays an important role in the long term user experience. As a developer, it is important to understand how to remove …
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 rename object keys in JavaScript? 4 Different Ways
Find out the different methods and techniques for JavaScript rename object keys. And discover which one is best for your needs. In this article, we will help you how to master …
How to change first letter capital in JavaScript?
In this article, I will be going to show you how to change first letter capital in JavaScript. In JavaScript, there are times when we need to employ strings and …
JavaScript function init: Usage and Examples
Today, we are going to deal with the JavaScript function init. This article will show you what is init function in javascript as well as its examples so that you …
How to use JavaScript Static Variable – Complete Guide
One powerful feature of JavaScript is static variables, which can be used to store values that are shared across multiple instances of a class or function. In this article, we …
JavaScript Read CSV: A Comprehensive Guide for Beginners
In this article, we will explore the topic of reading CSV files using JavaScript, providing you with a comprehensive guide to simplify your data processing needs. Generally, one common task …
How to add nonce in JavaScript?
One of the important aspect of JavaScript security is adding a nonce (number used once) to your script tags. In this article, we will discuss what a nonce is, why …
How JavaScript Removes First Character From String In 5 Ways
This article will explore five different ways how JavaScript removes first character from string. Whether you’re a beginner or an experienced developer, understanding these techniques will enhance your JavaScript skills …
How to iterate over Elements of a Set in JavaScript?
Are you wondering how to iterate over a set of elements in js or JavaScript? Keep on reading! In this article, you’ll discover and understand how to iterate over elements of …
How to access object properties in JavaScript?
One of the significant concept in JavaScript is working with objects, which are set of key-value pairs. Accessing object properties is an essential skill for manipulating and retrieving data within …
How to get tomorrow’s date in JavaScript? Effective Solutions
In this article, we will explore how to get tomorrow’s date in JavaScript with this effective solution. Our comprehensive guide will show you how to use built-in methods and functions to easily …
Exploring Less Than Or Equal To JavaScript Operator
In programming, comparison operators play a vital role in making decisions and controlling the flow of your code. JavaScript provides several comparison operators, and one of them is the “less …
How to remove all non-alphanumeric characters in JavaScript?
Are you struggling with how to remove all non-alphanumeric characters from a string in JavaScript? Well, keep reading because this article will show you how you can remove it easily and …
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.