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How to use Alert Component in ReactJS?

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ReactJS is a popular JavaScript library used for building user interfaces. It provides a component-based approach to web development, making it easier to create interactive and dynamic applications. One common requirement in many applications is displaying alerts or notifications to the user. In this article, we will explore how to use an alert component in ReactJS to display messages or important information to the user.

Alerts are urgent interruptions, requiring acknowledgment, that inform the user about a situation. Material UI for React has this component available for us, and it is very easy to integrate. We can use Alert Component in ReactJS using the following approach.

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
npm install @material-ui/lab

Project Structure: It will look like the following.

Project Structure

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


import React from "react";
import MuiAlert from "@material-ui/lab/Alert";
function Alert(props) {
    return <MuiAlert elevation={6}
        variant="filled" {...props} />;
export default function App() {
    return (
            <h4>How to use Alert Component in ReactJS?</h4>
            <Alert severity="success">Sample Success Message</Alert>
            <Alert severity="error">Sample Error Message</Alert>

Step to Run Application: Run the application using the following command from the root directory of the project.

npm start

Output: Now open your browser and go to http://localhost:3000/, you will see the following output.


Last Updated : 08 Jun, 2023
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