Html

JavaScript Comments

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JavaScript comments are notes written inside JavaScript code that are ignored by the JavaScript engine when the program runs. Developers use comments to explain what a particular section of code does, provide helpful information for other developers, temporarily disable code, and make larger programs easier to understand and maintain. Comments do not normally affect the … Read more

JavaScript Statements

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JavaScript statements are the instructions that tell a JavaScript program what to do. Just as a sentence in a human language communicates an idea, a JavaScript statement communicates an action or operation that the browser or JavaScript engine needs to perform. When you write JavaScript code, you usually combine multiple statements to create a complete … Read more

Setting Up JavaScript

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Learning JavaScript does not require a complicated setup. You can start writing and running JavaScript with a modern web browser and a code editor. JavaScript is commonly used with HTML and CSS to build interactive websites. HTML provides the structure.CSS controls the appearance. JavaScript adds logic, behavior, and interaction. For example, HTML can create a … Read more

How JavaScript works

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JavaScript is a programming language that allows websites and applications to perform actions. When you write JavaScript code, the browser does not simply display that code as text. A JavaScript engine reads the code, processes it, and executes the instructions. For example: When this code runs, the JavaScript engine processes the instructions and produces the … Read more

JavaScript Introduction

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JavaScript is one of the most widely used programming languages in modern web development. It allows developers to create interactive websites, dynamic web applications, browser-based tools, and many other types of software. HTML provides the structure of a webpage. CSS controls its appearance. JavaScript adds behavior and interaction. For example, HTML can create a button. … Read more

React DOM

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React is primarily responsible for building user interfaces, but something still needs to connect those React components to the actual web page in the browser. This is where React DOM comes in. React DOM provides APIs that allow React applications to work with the browser’s Document Object Model (DOM). It helps React create and update … Read more

React Built-in Components

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React provides several built-in components that solve common problems without requiring you to create your own component implementation. Some of these components are used every day, while others are more specialized. The built-in components covered in this chapter are: Each one has a different purpose. For example: Understanding when to use each component helps you … Read more

Other Hooks in React

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React provides several Hooks beyond the commonly used Hooks such as useState, useEffect, useContext, useRef, useMemo, and useCallback. Some of these additional Hooks solve very specific problems. For example: You will not use every one of these Hooks in every application. Some are especially useful when building reusable libraries, advanced components, forms, or applications that … Read more

React Ref Hooks

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React components normally update their user interface when their props or state change. But sometimes a component needs to remember a value without causing a re-render, or it needs direct access to a DOM element. This is where Refs become useful. A ref is a value that React keeps between renders. Unlike state, changing a … Read more

React Hooks

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React applications are built using components, and components often need to do more than simply display information. A component may need to: React Hooks provide functions that allow components to use these capabilities. Hooks became a major part of modern React development because they make it possible to reuse stateful logic without relying on class … Read more