ABOUT
REACT JS
React.js, often referred to as React, is an open-source JavaScript library known for its efficiency in building user interfaces (UIs). Developed and maintained by Facebook and a community of individual developers and companies, React has gained immense popularity since its release in 2013. What sets React apart is its component-based architecture, which simplifies UI development and enables the creation of interactive, reusable UI elements.
FEATURES
Component-Based
React follows a component-based architecture, where UIs are broken down into independent, reusable components. Developers can create complex UIs by assembling these components, resulting in modular and maintainable code.
Virtual DOM
React uses a Virtual DOM (Document Object Model) to optimize rendering. It calculates the difference between the current and previous states of the DOM and updates only the necessary parts, reducing unnecessary re-rendering and improving performance.
Declarative Syntax
React uses a declarative approach, allowing developers to describe the desired UI state, and React takes care of updating the DOM to match that state. This simplifies UI logic and makes code more predictable.
JSX (JavaScript XML)
React introduces JSX, a syntax extension for JavaScript that enables developers to write UI components using a familiar HTML-like syntax. JSX is then compiled into JavaScript for efficient execution.
Unidirectional Data Flow
React enforces a unidirectional data flow, making it easier to understand how data changes affect the UI. Data flows in one direction, from parent components to child components, preventing unexpected side effects.
Reusability
React components are highly reusable. Developers can create a component once and use it throughout the application. This reusability simplifies development and ensures consistency in UI elements.
Virtual DOM Diffing
React's Virtual DOM efficiently updates the UI by calculating the minimal number of changes needed to reflect new data. This approach reduces the performance overhead compared to manual DOM manipulation.
REACT JS
SYLLABUS
Introduction to React js
- React.js Fundamentals
- Component Composition
- Forms and User Input
- Routing in React
- Working with Lists and Keys
- Styling in React
- Consuming APIs
- State Management
- Forms and State Management with Redux
- Error Handling and Debugging
- Testing React Applications
