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ReactJS Reactstrap Collapse Component

  • Last Updated : 24 Nov, 2021

Reactstrap is a popular front-end library that is easy to use React Bootstrap 4 components. This library contains the stateless React components for Bootstrap 4. The Collapse component is used as a content area that can be collapsed and expanded. We can use the following approach in ReactJS to use the ReactJS Reactstrap Collapse Component.

Collapse Props:

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  • inOpen: It is used to show the component.
  • children: It is used to pass the children element to this component.
  • tag: It is used to denote the tag for our collapse component.
  • className: It is used to denote the class name for styling.
  • navbar: It is used to indicate whether it is associate with the navbar component or not.
  • cssModule: It is used to denote the CSS module for styling.
  • innerRef: It is used to denote the inner reference element.
  • mountOnEnter: It is used to mount the component as it waits until the first enter transition is triggered.
  • unmountOnExit: It is used to unmount the component.
  • appear: When the component mounts, it is used to run the collapse-in animation.  
  • enter: It is used to enable or disable enter transitions
  • exit: It is used to enable or disable exit transitions
  • timeout: It is used to denote the duration of collapse animation in milliseconds. 
  • addEndListener: It is used to denote a function that listens to an end event.
  • onEnter: It is a callback function that is triggered before the component collapse in.
  • onEntered: It is a callback function that is triggered after the has component collapsed in.
  • onEntering: It is a callback function that is triggered after the component starts to collapse in.
  • onExit: It is a callback function that is triggered before the component collapse out.
  • onExited: It is a callback function that is triggered after the component has collapsed out.
  • onExiting: It is a callback function that is triggered after the component starts to collapse out.
  • baseClass: It is used to denote the class that is always applied to the collapse element.
  • baseClassActive: It is used to denote the class applied to the collapse element when it is in an active state.

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 required module using the following command:

npm install reactstrap bootstrap

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.

Javascript




import React from 'react'
import 'bootstrap/dist/css/bootstrap.min.css';
import { Collapse, Button } from "reactstrap"
  
function App() {
  
    // Collapse Open state
    const [isOpen, setIsOpen] = React.useState(false);
  
    return (
        <div style={{
            display: 'block', width: 900, padding: 30
        }}>
            <h4>ReactJS Reactstrap Collapse Component</h4>
            <Button color="primary" onClick={() => {
                setIsOpen(!isOpen)
            }}>Toggle Me to see Collapse Component!</Button>
            <Collapse isOpen={isOpen}>
                <p>I am sample Text to display</p>
            </Collapse>
        </div >
    );
}
  
export default App;

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://reactstrap.github.io/components/collapse/




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