React-Bootstrap Custom Accordions

React-Bootstrap Custom Accordions are user-defined collapsible panels or sections in a web application built with React and the React-Bootstrap library. Developers can customize their behavior and appearance to create interactive and styled accordion components for displaying content.

Prerequisite:

• ReactJs
• React-bootstrap
• React-states
• NodeJs

We will implement custom accordions using the following approaches

Steps to create the project:

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

npx create-react-app foldername

Step 2: After creating your project folder i.e. folder name, 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 react-bootstrap 
npm install bootstrap

Project Structure:

Approach 1: Using React-Bootstrap Components

• In this approach we use React-Bootstrap components, such as Accordion, Card, and Button, to build an interactive accordion menu.
• State Management: It employs React’s useState hook to manage the active accordion section, providing a smooth user experience.
• Dynamic Content: The accordion dynamically renders sections with titles and content, making it ideal for displaying expandable information in a neat format.

Example: Below is the implementation of the above approach

Javascript

import React, { useState } from "react";
import Accordion from "react-bootstrap/Accordion";
import Card from "react-bootstrap/Card";
import Button from "react-bootstrap/Button";
import "bootstrap/dist/css/bootstrap.min.css";

function AccordionMenu() {
    // Set the default active key
    const [activeKey, setActiveKey] = useState("0");

    const sections = [
        {
            title: "HTML",
            content: `HTML stands for HyperText Markup Language.
                      It is used to design the web pages.
                      With the help of HTML, you can create
                      a complete website structure. HTML is the
                      combination of Hypertext and Markup language.`
        },
        {
            title: "CSS",
            content: `CSS (Cascading Style Sheets) is used to
                      styles web pages. Cascading Style Sheets
                      are fondly referred to as CSS. The reason
                      for using this is to simplify the process
                      of making web pages presentable.`
        },
        {
            title: "JavaScript",
            content: `JavaScript is a lightweight,
                      cross-platform, single-threaded...`
        }
    ];

    const handleAccordionClick = (index) => {
        setActiveKey(activeKey ===
            index ? null : index);
    };

    return (
        <div className="container">
            <h2 className="text-success">
                GeeksforGeeks
            </h2>
            <h3>Accordion menu</h3>
            <Accordion activeKey={activeKey}>
                {sections.map((section, index) => (
                    <Card key={index}>
                        <Card.Header>
                            <Accordion.Toggle
                                as={Button}
                                variant="link"
                                // Convert index to a string
                                eventKey={index.toString()}
                                onClick={
                                    () =>
                                        handleAccordionClick(index.toString())}>
                                {section.title}
                            </Accordion.Toggle>
                        </Card.Header>
                        <Accordion.Collapse
                            eventKey={index.toString()}>
                            <Card.Body>
                                {section.content}
                            </Card.Body>
                        </Accordion.Collapse>
                    </Card>
                ))}
            </Accordion>
        </div>
    );
}

export default AccordionMenu;

Output:

Approach 2: Using useState to manage accordion.

• Using React’s useState hook to manage accordion content and user input, ensuring dynamic and responsive data handling.
• Implement event handlers for input changes and accordion toggles, synchronizing user input with corresponding accordion box content.
• Using React-Bootstrap components (Accordion, Card, Button, Form) for UI elements

Example: Below is the implementation of the above approach

Javascript

import React, { useState } from "react";
import "bootstrap/dist/css/bootstrap.min.css";
import { Accordion, Card, Button, Form } from "react-bootstrap";

export default function App() {
  const [accordionData, setAccordionData] = useState({
    0: "Greetings from Accordion Box 1 :)",
    1: "Greetings from Accordion Box 2 :)"
  });

  const [userInput, setUserInput] = useState({
    0: "",
    1: ""
  });

  const handleAccordionChange = (eventKey) => {
    setAccordionData({
      ...accordionData,
      [eventKey]: userInput[eventKey]
    });
  };

  const handleInputChange = (event, eventKey) => {
    setUserInput({
      ...userInput,
      [eventKey]: event.target.value
    });
  };

  return (
    <div style={{ display: "block", width: 400, padding: 30 }}>
      <h4>Accordion in React-Bootstrap</h4>
      <Accordion defaultActiveKey="0">
        <Card>
          <Card.Header>
            <Accordion.Toggle as={Button} variant="link" eventKey="0">
              <span style={{ fontWeight: "bold" }}>JavaScript</span>
            </Accordion.Toggle>
          </Card.Header>
          <Accordion.Collapse eventKey="0">
            <Card.Body>
              <Form.Group>
                <Form.Control
                  type="text"
                  placeholder="Enter text"
                  value={userInput[0]}
                  onChange={(e) => handleInputChange(e, "0")}
                />
                <Button
                  variant="primary"
                  onClick={() => handleAccordionChange("0")}
                >
                  Update Content
                </Button>
              </Form.Group>
              {accordionData[0]}
            </Card.Body>
          </Accordion.Collapse>
        </Card>

        <Card>
          <Card.Header>
            <Accordion.Toggle as={Button} variant="link" eventKey="1">
              <span style={{ fontWeight: "bold" }}>React.JS</span>
            </Accordion.Toggle>
          </Card.Header>
          <Accordion.Collapse eventKey="1">
            <Card.Body>
              <Form.Group>
                <Form.Control
                  type="text"
                  placeholder="Enter text"
                  value={userInput[1]}
                  onChange={(e) => handleInputChange(e, "1")}
                />
                <Button
                  variant="primary"
                  onClick={() => handleAccordionChange("1")}
                >
                  Update Content
                </Button>
              </Form.Group>
              {accordionData[1]}
            </Card.Body>
          </Accordion.Collapse>
        </Card>
      </Accordion>
    </div>
  );
}

Output: