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How to use Collapse Component in ReactJS ?
  • Last Updated : 22 Feb, 2021

Collapse Component adds a Collapse animation to a child element or component in which it vertically expands from the top of the child element. Material UI for React has this component available for us, and it is very easy to integrate. We can use the Collapse 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

Project Structure: 

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. 

App.js




import React from 'react';
import FormControlLabel from '@material-ui/core/FormControlLabel';
import Paper from '@material-ui/core/Paper';
import Switch from '@material-ui/core/Switch';
import Collapse from '@material-ui/core/Collapse';
  
export default function App() {
  
  const [isChecked, setIsChecked] = React.useState(false);
  
  return (
    <div style={{ display: 'block', padding: 30 }}>
      <h4>How to use Collapse Component in ReactJS?</h4>
      <FormControlLabel
        control={<Switch checked={isChecked} onChange={() => {
          setIsChecked((prev) => !prev);
        }} />}
        label="Toggle me to see Collapse Effect"
      />
      <div style={{ display: 'flex' }}>
        <Collapse in={isChecked}>
          <Paper
            elevation={5}
            style={{ margin: 5 }} >
            <svg style={{ width: 100, height: 100 }}>
              <polygon points="0,80 45,00, 80,70"
                style={{
                  fill: 'orange',
                  stroke: 'dimgrey',
                  strokeWidth: 1,
                }} />
            </svg>
          </Paper>
        </Collapse>
      </div>
    </div>
  );
}

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.

Reference: https://material-ui.com/components/transitions/#collapse

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