Front-End Programming Exam > Front-End Programming Videos > Learn React JS: Fundamentals for Front-End Developers (in Urdu) > React JS In Urdu ~ JSX and React CLI (part 1 of 9)
React JS In Urdu ~ JSX and React CLI (part 1 of 9) Video Lecture | Learn React JS: Fundamentals for Front-End Developers (in Urdu) - Front-End Programming
FAQs on React JS In Urdu ~ JSX and React CLI (part 1 of 9) Video Lecture - Learn React JS: Fundamentals for Front-End Developers (in Urdu) - Front-End Programming
| 1. JSX and React CLI both are important aspects of React JS, but what is the difference between them? |  |
Ans. JSX is a syntax extension for JavaScript that allows you to write HTML-like code within your JavaScript code. It is used in React to describe the structure of the user interface. On the other hand, React CLI (Command Line Interface) is a tool that helps developers to create, build, and manage React applications easily. It provides a set of commands to streamline the development process. While JSX is a part of the code, React CLI is a tool used to manage the project.
| 2. How does JSX work in React JS? | |
Ans. JSX is a syntax extension for JavaScript that allows you to write HTML-like code within your JavaScript code. It is used in React to describe the structure of the user interface. JSX code is transformed into regular JavaScript code before it is executed. This is done using a transpiler like Babel. The transpiler converts the JSX code into function calls, which ultimately render the HTML components.
| 3. What are the benefits of using JSX in React JS? | |
Ans. JSX provides several benefits in React JS development:
1. Easy and intuitive: JSX allows developers to write HTML-like code, making it easier to understand and visualize the structure of the user interface.
2. Component-based approach: JSX promotes the use of reusable components, allowing developers to build complex UIs by combining smaller components together.
3. Performance optimizations: JSX enables React to perform optimizations like Virtual DOM diffing, which helps in efficiently updating only the necessary parts of the UI.
4. Integration with JavaScript: JSX allows you to seamlessly integrate JavaScript logic within the HTML-like code, making it easier to handle dynamic data and events.
| 4. How to install React CLI for creating React applications? | |
Ans. To install React CLI, you can use the following steps:
1. Open your command line interface (CLI) or terminal.
2. Run the command "npm install -g create-react-app" to install Create React App globally.
3. Once the installation is complete, you can create a new React application by running the command "npx create-react-app my-app" (replace "my-app" with your preferred project name).
4. Change your directory to the newly created project folder by running the command "cd my-app" (replace "my-app" with your actual project name).
5. Finally, start the development server by running the command "npm start". This will launch your React application in your browser.
| 5. Can I use React CLI to manage an existing React project? | |
Ans. Yes, you can use React CLI to manage an existing React project. However, it is important to note that React CLI (Create React App) is primarily used to create new React applications with a pre-configured development environment. If you already have an existing React project, you can manually set up the development environment or use other tools like Webpack to manage your project. React CLI is particularly useful for beginners or those who want to quickly set up a new React project with minimal configuration.
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Nov 25, 2024 Last updated |
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