JavaScript

IndexedDB is a powerful built-in browser database that lets web applications store large amounts of structured data. Unlike simpler web storage solutions like localStorage or sessionStorage, IndexedDB supports complex objects and transactions, making it ideal for applications that require offline capabilities, such as games, note-taking apps, or any system needing persistent data beyond just simple […]

Objects are at the heart of JavaScript and are essential to understanding how the language models real-world things. Simply put, an object is a container that holds related data and functions together. These containers represent entities with properties (describing characteristics) and methods (actions they can perform). JavaScript’s object system is flexible, allowing developers to create

Session storage is a built-in web storage feature in JavaScript that allows websites to save data for the duration of a browser tab session. Unlike localStorage, which keeps data even after closing and reopening the browser, sessionStorage only holds information as long as the tab or window remains open. Once the user closes the tab,

Object-Oriented Programming (OOP) is a way of writing code that models real-world things or ideas as objects. These objects group together data (called properties) and actions (called methods) that belong together. This method of programming helps us organize code clearly and makes it easier to manage complexity by thinking in terms of objects rather than

Cookies are small pieces of data that a website can store on a user’s browser. These tiny text strings help a website remember information across multiple page views, sessions, and even days or months. Unlike localStorage or sessionStorage, cookies can be automatically sent with HTTP requests to the server, making them useful for things like

In the world of modern web development, keeping data close to the user is a big win. One way JavaScript makes this possible is through the Web Storage API, specifically Local Storage. This feature allows developers to store data in the user’s browser without needing a server or database. Local Storage is incredibly useful when

In JavaScript, understanding what type of data you are working with is essential for writing clear and effective code. The typeof operator is a built-in tool that lets you check the data type of any value or variable. It returns a string describing the type, such as “string”, “number”, or “object”. This operator is very

JavaScript methods are like built-in tools that let you work with different types of data quickly and easily. Whether you want to change text, work with lists, handle numbers, or respond to user actions, methods are functions attached to objects that help you do these tasks without writing all the code from scratch. For beginners,

JavaScript events flow through the DOM (Document Object Model) in a process called event propagation. When you interact with elements on a web page, like clicking a button inside a box, the event doesn’t just affect that button alone. Instead, it moves through a sequence of phases in the DOM tree, traveling from the top

Event delegation is a technique in JavaScript that lets you handle events more efficiently by placing a single event listener on a parent element instead of many listeners on each child element. When a user interacts with any of the child elements, the event bubbles up to the parent, which catches it and decides how