How to use CircularProgress Component in ReactJS?

Last Updated : 22 Jan, 2021

As we know that progress indicators inform users about the status of ongoing processes such as loading an app, uploading data, etc. We can use CircularProgress Component in ReactJS to show this circular loading effect. Material UI for React has this component available for us and it is very easy to integrate.

Creating React Application And Installing Module:

Step 1: Create a React application using the following command:

npx create-react-app foldername

Step 2: After creating your project folder i.e. foldername, move to it using the following command:

cd foldername

Step 3: After creating the ReactJS application, Install the material-ui modules using the following command:

npm install @material-ui/core

Project Structure: It will look like the following.

Project Structure

App.js: Now write down the following code in the App.js file. Here, App is our default component where we have written our code.

Javascript

import React, {useEffect, useState} from 'react';
import CircularProgress from '@material-ui/core/CircularProgress';
  
const App = () => {
  
  useEffect(()=> {
    getDataFromAPI()
  }, [])
  
  const [isLoading, setIsLoading] = useState(true)
  
  // Sample API to fetch Data
  const getDataFromAPI = () => {
    console.log("API called!!")
    fetch('http://dummy.restapiexample.com/api/v1/employees')
     .then((response) => {
      return response.json()
    }).then((res) => {
      setTimeout(()=>{
        setIsLoading(false)
      }, 2000)
    })
  }
  
  return (
    <div style={{
      marginLeft: '40%',
    }}>
      <h2>How to use CircularProgress Component in ReactJS?</h2>
      {isLoading && <CircularProgress color="secondary" />} 
      {!isLoading && <h3>Successfully API Loaded Data</h3>}
    </div>
  );
}
  
export default App;