How To Maintain The State In React

In my previous article, I discussed React components and props. you can view that here.

In this article, we are going to see about the state and how we are going to maintain the state in React. If we take any web application it's that important to learn how we will go to maintain the state.

In React, state is an object that represents the variables or data that can change in a React component. It's an essential aspect of building dynamic user interfaces and enables components to re-render when their state changes. The state is mutable, meaning it can change over time, whereas the props are immutable. The state should only be modified using React's setState method and it should never be directly modified.

Here's a simple example of using state in React,

import React, { useState } from 'react';

function Example() {
const [count, setCount] = useState(0);
  return (
    <div>
      <p>You clicked {count} times</p>
      <button onClick={() => setCount(count + 1)}>
        Click me
      </button>
    </div>
  );
}

In this example, we're using the useState hook to manage a piece of state called count. Initially, count is set to 0. Each time the button is clicked, the setCount function is called, updating the state, which causes the component to re-render with the new value of count.

state in React can be used for many purposes, including,

1. Keeping track of user-generated data: For example, you could use the state to store the values of input fields in a form.
2. Storing data that changes over time: For example, you could use a state to store the current time or a counter.
3. Storing data that are fetched from an API: For example, you could use the state to store data that are fetched from an external API and display it in your component.
4. Storing component-specific data: For example, you could use the state to store a flag indicating whether a dropdown menu is open or closed.
5. Storing data that needs to be shared between components: For example, you could store data in a state that's shared between multiple components in your application.

In general, the state is used to store data that can change and is used to make components dynamic and interactive.

Thanks for reading my article, and we will see another useful article soon.