React Redux In ReactJS

React-Redux is a popular library that enables React applications to use the Redux state management library. It provides a way to connect the components in your React app to the Redux store, allowing them to access the store’s state and dispatch actions. In this blog, we’ll look at how to use React-Redux to add state management to a React application.

To start, you’ll need to install the react-redux library, as well as Redux itself. You can install both libraries using npm or yarn:

npm install react-redux redux

or

yarn add react-redux redux

Once you’ve installed the libraries, you’ll need to create a Redux store and configure it with reducers. A reducer is a function that takes the current state of the store and an action, and returns a new state. You can think of it as a way to specify how the store’s state should change in response to actions.

Here’s an example of how to create a simple Redux store and configure it with a reducer:

import { createStore } from 'redux';

// Define a reducer function
function counterReducer(state = 0, action) {
  switch (action.type) {
    case 'INCREMENT':
      return state + 1;
    case 'DECREMENT':
      return state - 1;
    default:
      return state;
  }
}

// Create the store and pass it the reducer
const store = createStore(counterReducer);

Now that you have a store, you can use the react-redux library to connect your React components to the store. The react-redux library provides two main functions: connect and Provider.

The Provider component is used to wrap your entire React app, and it makes the store available to all of the components in your app. Here’s an example of how to use the Provider component:

import { Provider } from 'react-redux';

ReactDOM.render(
  <Provider store={store}>
    <App />
  </Provider>,
  document.getElementById('root')
);

The connect function is used to connect a specific component to the store. It takes two arguments: a function called mapStateToProps, which specifies which pieces of the store’s state should be passed to the component as props, and a function called mapDispatchToProps, which specifies which action creators should be passed to the component as props.

Here’s an example of how to use the connect function to connect a component to the store:

import { connect } from 'react-redux';

// Define a component
function Counter({ count, increment, decrement }) {
  return (
    <div>
      <button onClick={decrement}>-</button>
      {count}
      <button onClick={increment}>+</button>
    </div>
  );
}

// Map the store's state to the component's props
function mapStateToProps(state) {
  return {
    count: state
  };
}

// Map action creators to the component's props
function mapDispatchToProps(dispatch) {
  return {
    increment:

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