Math.sqrt() Method in JavaScript: A Method to Get the Square Root
How do we use the Math.sqrt() method to get the square root of a number in JavaScript? In this article, you’ll learn how to calculate square roots with ease and boost your …
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 ↓
Kahoot Hack JavaScript with Method and Example Codes
In educational engagement, Kahoot has transformed the way teachers and students interact. But what if there was an action to raise the fun even further? That’s where Kahoot Hack JavaScript …
How to Multiply Strings JavaScript
In this article, you are going to learn how to multiply a string in JavaScript with the different methods and best practices. Whether you intend to repeat a certain string …
JavaScript Remove All Event Listeners | Comprehensive Guide
JavaScript has become an integral part of web development, wherein it enables dynamic and interactive user experiences. Hence, Event listeners play a crucial role in responding to user actions on …
JavaScript Sum Array Of Objects Techniques & Practical Examples
When working in JavaScript, one common task to encounter is to calculate the sum of values within an array of objects. In this article, we will explore the world of …
What is Math.power or Math.pow() Method in JavaScript?
What is Math.power or Math.pow() Method in JavaScript and how to use it? Keep on reading! In this article, you’ll discover the power of JavaScript’s Math.pow() method. You will learn how to …
What Is A Junior Javascript Developer?
A Junior Javascript developer plays a pivotal role in creating interactive and user-friendly websites. In this comprehensive guide, we will delve into the diverse responsibilities, essential skills, and the exciting …
Understanding Math.max() method in JavaScript with Example
Are you ready to embark on an exciting journey exploring the Math.max() method in JavaScript? This article promises to unveil new insights and deepen your understanding of Math.max(). You’ll learn not only …
Pino JavaScript with Example Codes and Methods
In this article, you are going to learn how to utilize the Pino JavaScript, exploring example codes and methods to used its capabilities effectively. In web development, powerful and dynamic …
Math random() Method in JavaScript
Are you ready to find out the solution on how to generate a random number in JavaScript using Math.random()? In this article, we will embark on an exciting exploration of …
Negative Infinity JavaScript with Methods and Example Codes
This article will discuss the understanding of negative infinity in JavaScript, provide with example codes, explanations, and practical applications. What is Negative Infinity JavaScript? Negative infinity in JavaScript is a …
JavaScript Array.includes(): Check if array contains specified value
Do you really want to know how to use the JavaScript array.includes() method to check if an array contains a specified value? Read on to discover how to leverage the …
Fixing Onclick JavaScript Not Working Issues
The “onclick JavaScript not working” issue is a common block that many developers encounter. In this guide, we will discuss the possible reasons behind this issue and provide you with …
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.