React JS is a popular JavaScript library used for building user interfaces. It’s known for its efficiency, flexibility, and component-based architecture.
Understanding React JS
Component-Based Architecture: React breaks down user interfaces into reusable components, making it easier to manage and maintain complex applications.
Declarative Programming: React uses a declarative approach, allowing developers to describe what they want the UI to look like, rather than how to achieve it.
Virtual DOM: React’s virtual DOM efficiently updates the real DOM, resulting in better performance.
JSX: React uses JSX, a syntax extension for JavaScript that allows you to write HTML-like code within JavaScript.
Benefits of Using React JS
Efficiency: React’s virtual DOM optimizes updates, leading to better performance.
Flexibility: React can be used to build a wide range of applications, from simple websites to complex web apps.
Community Support: React has a large and active community, providing extensive resources, libraries, and support.
Component-Based Architecture: This modular approach promotes code reusability and maintainability.
How to Create a React App
Set Up Your Development Environment: Install Node.js and npm (Node Package Manager).
Create a New React App: Use the Create React App tool to generate a new React project.
Write Components: Create reusable components using JSX to define the structure and content of your app.
Manage State: Use React’s state management features to store and update data within components.
Handle Events: Implement event handlers to respond to user interactions.
Style Your Components: Use CSS or CSS preprocessors like Sass or Less to style your components.
React JS Interview Questions
What is JSX?
Explain the concept of state and props in React.
How does React’s virtual DOM work?
What is React Hooks?
How do you handle component lifecycle methods in React?
React JS Course at Yess Infotech
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React fundamentals
JSX and components
State and props
React Hooks
Routing and data fetching
Building complex React applications
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Hands-on learning experiences.
Job placement assistance.
Flexible learning options.
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