React Component in Files

In a React application, you often define your components in separate files to keep your code organized and maintainable. This modular approach allows you to create, reuse, and manage your components more effectively. Here’s a typical structure for organizing React components in files:

Component Files:

Create a separate file for each component. The file name typically matches the component’s name, and it uses the “.js” extension. Example: Suppose you have a component named “Header,” and it’s a functional component. You can create a file named “Header.js” to define the component.

   // Header.js

   import React from 'react';

   function Header() {
     return (
       <header>
         <h1>My App</h1>
       </header>
     );
   }

   export default Header;

Component Organization:

Organize your component files in a logical directory structure. You might have a “components” directory to contain all your component files. Within this directory, you can create subdirectories for different categories of components if your project is large.

   src/
   ├── components/
   │   ├── Header.js
   │   ├── Sidebar.js
   │   └── ...
   ├── App.js
   └── ...

Importing and Using Components:

In your application files (e.g., “App.js” or other components), you import the components you need using ES6 module syntax. You can then use these components as if they were HTML elements.

   // App.js

   import React from 'react';
   import Header from './components/Header';
   import Sidebar from './components/Sidebar';

   function App() {
     return (
       <div>
         <Header />
         <Sidebar />
         {/* Other components and content */}
       </div>
     );
   }

   export default App;

Component Export and Import:

Export your components using the export statement, and import them using the import statement in other files where you want to use them. You specify the component’s name in the export statement.
Ensure that you provide the correct file paths when importing components. You can use relative paths to navigate to the component files from the importing file.

By organizing your React components into separate files and directories, you can maintain a clean and structured codebase, making it easier to collaborate with other developers and manage the complexity of your application.

React Component we can also use through files. just have to create a .js File e.g: an App.js file then write the following code

import React from 'react';
import ReactDOM from 'react-dom';

class Name extends React.Component {
  render() {
    return <h2>my name is yashpal</h2>;
  }
}

export default Name;

Caution

Use import React from ‘react’ as first

Use export default Name

Now to use the Component just import the App.js file

import React from 'react';
import ReactDOM from 'react-dom';
import Name from './App.js';

ReactDOM.render(<Name />, document.getElementById('root'));

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