How to Remove Last Element from an Array in JavaScript? 5 Ways
Are you thrilled to know the different ways to remove the last element from an array in JavaScript? Discover five (5) different ways to remove the last element from an array. …
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 ↓
Prime Number JavaScript: Explained with Examples
In this article, we will discuss the prime number in JavaScript, understand how to define if a number is prime using JavaScript, and provide example codes to demonstrate the concepts. …
How to Use JavaScript Math.round() Function?
In JavaScript, the Math.round() function is a built-in method that enables you to round a given number to the closest integer. This function is simply used to perform rounding operations …
How does RegExp test() Method Works in JavaScript?
Learn everything you need to know about the test() method of the RegExp object in JavaScript. This article explains the syntax, parameters, and return value of the test() method, as …
Cannot Use Import Statement Outside A Module JavaScript: Fixed
One such cryptic error message the developer encounters is “Cannot use import statement outside a module.” In this article, we’ll examine this error, exploring its causes, and solutions, and providing …
Trimming a String in JavaScript using trim() Method
Is trimming a string in JavaScript hard? Well, if you want to know everything, read on! In this article, we will show you how to trim a string in JavaScript …
CreateTextNode JavaScript with Example Codes
In web development, manipulating the content displayed on a webpage is an important skill. One way to accomplish this is through the JavaScript createtextnode. This powerful function allows you to …
JavaScript Array Methods Cheat Sheet | Your Ultimate Guide
In this guide, we present a detailed JavaScript array method cheat sheet, providing insights, examples, and practical tips to enhance your array-handling skills. One of the most fundamental aspects of …
Mastering the Array shift() and Array unshift() Methods in JavaScript
Do you want to know more about the shift() and unshift() methods in JavaScript arrays? In this article, you’ll learn how to use these methods to manipulate arrays and understand …
JavaScript toLowerCase is Not a Function
Like any programming language, it comes with its own set of challenges and errors. One of these errors is the “JavaScript toLowerCase is not a function“. In this article, we …
JavaScript Print Stack Trace with Example Codes
In this article, you are going to learn the complexity of printing stack traces in JavaScript with example codes, providing you with the knowledge to handle errors efficiently. In programming, …
JavaScript Array findFirst: Discovering the First Occurrence
Are you ready to explore the world of JavaScript arrays and uncover the hidden gem known as “Find first array element“? If you’re a developer seeking to optimize your code, …
Mastering JavaScript: Calculating the Average of an Array
When it comes to working with arrays in JavaScript, one common task is to calculate the average of the array elements. Whether you’re building a data visualization tool or analyzing …
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.