Why Every Framework Creating Custom Components

Modern front-end frameworks like React promote building apps using custom components — and for good reason. Custom components provide powerful advantages that improve code quality, scalability, and development speed.

✅1. Reusability
You can reuse the same component multiple times across the app with different data (props/inputs), which saves code repetition.

🔒2. Encapsulation
Custom components encapsulate their own logic, structure, and styling — preventing conflicts with other parts of the app.

🧠3. Separation of Concerns
Each component handles one specific part of your UI or logic, making it easier to manage and test.

🛠️4. Maintainability
If you need to make a UI or logic change, you only update the component in one place instead of all over the codebase.

🧼5. Cleaner Code Structure
Breaking your UI into small, logical components makes your app easier to read, understand, and debug.

🔤6. Custom Component File Naming
In React, if a component starts with a capital letter, it's treated as a custom component.
If it starts with a lowercase letter, React assumes it’s a built-in HTML tag.

Example:->Creating and Using a Custom Button in React
1. Custom Button Component

import React from 'react';
const CustomButton = ({ label, onClick, type = 'button', className = '' }) => {
  return (
    <button type={type} onClick={onClick} className={`custom-btn ${className}`}>
      {label}
    </button>
  );
};

export default CustomButton;

2. Using the Custom Component in App

import React from 'react';
import CustomButton from './CustomButton';

const App = () => {
  const handleClick = () => {
    alert('Button Clicked!');
  };

  return (
    <div>
      <h1>Welcome to My App</h1>

      <CustomButton 
        label="Submit" 
        onClick={handleClick} 
        className="primary" 
      />

      <CustomButton 
        label="Cancel" 
        onClick={() => console.log('Cancelled')} 
        className="secondary" 
      />
    </div>
  );
};

export default App;