How to Sharing data between components in React JS?

 Sharing data between components:

In React.js, there are several ways to share data between components depending on the relationship between the components and the complexity of the application. Here are some common approaches:

Props: Props (short for properties) are used to pass data from a parent component to a child component. The parent component can pass data as props when rendering the child component, and the child component can access and use that data. This is the most straightforward way to share data between components. Here's an example:

// ParentComponent.js

import React from 'react';

import ChildComponent from '

./ChildComponent';

function ParentComponent() {

const data = 'Hello, child component!';

  return <ChildComponent message=

{data} />;

}

// ChildComponent.js

import React from 'react';

function ChildComponent(props) {

  return <div>{props.message}</div>;

}

State Lifting: If two or more components share the same data or need to update it, you can lift the state up to their common parent component. The parent component will hold the shared state and pass it down as props to the child components. When the state updates, it will propagate to the child components, and they can re-render accordingly. Here's an example:

// ParentComponent.js

import React, { useState } from 'react';

import ChildComponent from '

./ChildComponent';

function ParentComponent() {

  const [count, setCount] = useState(0);

  const incrementCount = () => {

    setCount(count + 1);

  };

  return (

    <div>

      <ChildComponent count={count}

increment={incrementCount} />

    </div>

  );

}

// ChildComponent.js

import React from 'react';

function ChildComponent(props) {

  return (

    <div>

      <p>Count: {props.count}</p>

      <button onClick={props.increment}>

Increment</button>

    </div>

  );

}

Context API: The Context API allows you to create a shared state that can be accessed by multiple components, even if they are not directly connected in the component tree. It eliminates the need to pass props through intermediate components. Here's an example:

// DataContext.js

import React from 'react';

const DataContext = React.createContext();

export default DataContext;

// ParentComponent.js

import React, { useState } from 'react';

import ChildComponent from '

./ChildComponent';

import DataContext from './DataContext';

function ParentComponent() {

  const [data, setData] = useState

('Hello, child components!');

  return (

    <DataContext.Provider value={data}>

      <ChildComponent />

    </DataContext.Provider>

  );

}

// ChildComponent.js

import React, { useContext } from

'react';

import DataContext from './DataContext';

function ChildComponent() {

  const data = useContext(DataContext);

  return <div>{data}</div>;

}

These are just a few approaches to sharing data between components in React.js. The choice of method depends on your specific use case and the complexity of your application.

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