How do I create a custom object in react

Question

With the help of a coding example, can you tell me how to create a custom object in React?

Answer 1

Creating a custom popover in React enhances user interaction by displaying additional content or controls in a floating layer. Here's a step-by-step guide to building a simple, accessible popover component:

1. Set Up Your React Project:

If you haven't already, create a new React application:

npx create-react-app react-popover

cd react-popover

2. Create the Popover Component:

Define a Popover component that manages its visibility and positioning.

import React, { useState, useRef, useEffect } from 'react';

import './Popover.css'

const Popover = ({ children, content }) => {

  const [isVisible, setIsVisible] = useState(false);

  const popoverRef = useRef(null);

  const triggerRef = useRef(null);

const toggleVisibility = () => {

    setIsVisible(!isVisible);

  };

  useEffect(() => {

    const handleClickOutside = (event) => {

      if (

        popoverRef.current &&

        !popoverRef.current.contains(event.target) &&

        !triggerRef.current.contains(event.target)

      ) {

        setIsVisible(false);

      }

    };

    document.addEventListener('mousedown', handleClickOutside);

    return () => {

      document.removeEventListener('mousedown', handleClickOutside);

    };

  }, []);

  return (

    <div className="popover-container">

      <button

        ref={triggerRef}

        onClick={toggleVisibility}

        className="popover-trigger"

        aria-haspopup="true"

        aria-expanded={isVisible}

        aria-controls="popover-content"

      >

        {children}

      </button>

      {isVisible && (

        <div

          id="popover-content"

          ref={popoverRef}

          className="popover-content"

          role="dialog"

          aria-modal="true"

        >

          {content}

        </div>

      )}

    </div>

  );

};

export default Popover;

3. Style the Popover:

Add CSS to position and style the popover.

.popover-container {

  position: relative;

  display: inline-block;

}

.popover-trigger {

  background-color: #007bff;

  color: white;

  border: none;

  padding: 10px;

  cursor: pointer;

  border-radius: 4px;

}

.popover-content {

  position: absolute;

  top: 100%;

  left: 50%;

  transform: translateX(-50%);

  margin-top: 10px;

  background-color: white;

  border: 1px solid #ccc;

  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);

  border-radius: 4px;

  padding: 15px;

  z-index: 1000;

  white-space: nowrap;

}

4. Use the Popover Component:

Implement the Popover component in your main application file.

import React from 'react';

import Popover from './Popover';

import './App.css';

function App() {

  return (

    <div className="App">

      <h1>Custom Popover Component</h1>

      <Popover content={<div>This is the popover content!</div>}>

        Click Me

      </Popover>

    </div>

  );

}

export default App;