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ReactJS Blueprint Collapse Component

  • Last Updated : 14 Jul, 2021
Geek Week

BlueprintJS is a React-based UI toolkit for the web. This library is very optimized and popular for building interfaces that are complex data-dense for desktop applications. Collapse Component provides a way for users to shows and hides content with a built-in slide in/out animation. We can use the following approach in ReactJS to use the ReactJS Blueprint Collapse Component.

Collapse Props:

  • className: It is used to denote a space-delimited list of class names to pass along to a child element.
  • component: It is used to denote the component to render as the root element.
  • isOpen: It is used to indicate whether the component is open or closed.
  • keepChildrenMounted: It is used to indicate whether the child components will remain mounted when the Collapse is closed or not.
  • transitionDuration: It is used to denote the length of time the transition takes, in milliseconds.

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 @blueprintjs/core

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.

App.js




import React from 'react'
import '@blueprintjs/core/lib/css/blueprint.css';
import { Collapse, Button } from "@blueprintjs/core";
  
function App() {
  
    // State to maintain Collpase isOpen value
    const [isOpen, setIsOpen] = React.useState(false)
  
    return (
        <div style={{
            display: 'block', width: 500, padding: 30
        }}>
            <h4>ReactJS Blueprint Collapse Component</h4>
            <Button onClick={() => setIsOpen(!isOpen)}>Toggle Collapse
            </Button>
            <Collapse isOpen={isOpen}>
                Sample Text to display!
            </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://blueprintjs.com/docs/#core/components/collapse

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