In React, "props" (short for properties) are a way to pass data from one component to another — typically from a parent component to a child component. Props allow components to be dynamic and reusable by giving them the flexibility to render different outputs based on the data they receive.

How Props Work:

• Props are passed to components similarly to how attributes are added to HTML tags.
• They are read-only, meaning a component cannot modify its own props. This ensures that data flow in React remains unidirectional (from parent to child).
• Props help in customizing components without altering their core logic.

Example:

function Welcome(props) {
  return <h1>Hello, {props.name}!</h1>;
}

// Usage
<Welcome name="John" />
<Welcome name="Jane" />

In the example above, the Welcome component can greet different users based on the name prop it receives.

Why Are Props Important?

• Reusability: Instead of writing multiple components for slightly different use cases, you can create one flexible component that adjusts based on props.
• Component Communication: Props enable communication between components, allowing for modular and maintainable code.
• Unidirectional Data Flow: Props support React's design principle of one-way data binding, making it easier to track how data moves through an application.
• Customization: Components can adapt their behavior and appearance based on different props without needing to change their internal code.

Key Points to Remember:

• Props are immutable inside the child component.
• They are passed as an object.
• You can pass any JavaScript value as a prop: strings, numbers, arrays, objects, functions, and even other components.

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