react-modal

What is react-modal?

The react-modal npm package is a library that provides accessible modal dialog components for React applications. It allows developers to create and manage modals in an accessible way, following the WAI-ARIA guidelines for modality. The package offers features such as locking the background scroll when a modal is open, setting the app element, and customizing styles and behaviors of the modal.

What are react-modal's main functionalities?

Basic Modal Usage

This code demonstrates how to create a basic modal using react-modal. It includes a button to open the modal and a button inside the modal to close it.

{"import React, { useState } from 'react';\nimport Modal from 'react-modal';\n\nconst App = () => {\n  const [modalIsOpen, setModalIsOpen] = useState(false);\n\n  function openModal() {\n    setModalIsOpen(true);\n  }\n\n  function closeModal() {\n    setModalIsOpen(false);\n  }\n\n  return (\n    <div>\n      <button onClick={openModal}>Open Modal</button>\n      <Modal\n        isOpen={modalIsOpen}\n        onRequestClose={closeModal}\n        contentLabel='Example Modal'\n      >\n        <h2>Hello</h2>\n        <button onClick={closeModal}>close</button>\n        <div>I am a modal</div>\n      </Modal>\n    </div>\n  );\n};\n\nexport default App;"}

Custom Styles

This code snippet shows how to apply custom styles to a modal using the 'style' prop.

{"import React from 'react';\nimport Modal from 'react-modal';\n\nconst customStyles = {\n  content: {\n    top: '50%',\n    left: '50%',\n    right: 'auto',\n    bottom: 'auto',\n    marginRight: '-50%',\n    transform: 'translate(-50%, -50%)'\n  }\n};\n\nconst App = () => {\n  return (\n    <Modal\n      isOpen={true}\n      style={customStyles}\n      contentLabel='Example Modal'\n    >\n      <h2>Hello</h2>\n      <button>close</button>\n      <div>I am a modal with custom styles</div>\n    </Modal>\n  );\n};\n\nexport default App;"}

Accessibility Features

This example demonstrates how to enhance the accessibility of a modal by setting the app element and using ARIA attributes.

{"import React from 'react';\nimport Modal from 'react-modal';\n\nModal.setAppElement('#yourAppElement');\n\nconst App = () => {\n  return (\n    <Modal\n      isOpen={true}\n      aria={{\n        labelledby: 'heading',\n        describedby: 'full_description'\n      }}\n      contentLabel='Accessible Example Modal'\n    >\n      <h2 id='heading'>Hello</h2>\n      <div id='full_description'>I am an accessible modal</div>\n      <button>close</button>\n    </Modal>\n  );\n};\n\nexport default App;"}

Other packages similar to react-modal

react-bootstrap

React Bootstrap provides a Bootstrap-based modal component. It is similar to react-modal but also includes a wide range of other Bootstrap components for use in React.

material-ui

Material-UI offers a Dialog component that is similar to react-modal. It follows Material Design guidelines and integrates well with other Material-UI components.

reactstrap

reactstrap is another Bootstrap-based library that includes a Modal component. It is similar to react-modal but is specifically designed for use with Bootstrap 4.

README

React Modal

Accessible React Modal Dialog Component

Usage

<Modal
  isOpen={this.state.modalIsOpen}
  onRequestClose={this.handleModalCloseRequest}
  closeTimeoutMS={150}
>
  <h1>Modal Content</h1>
  <p>Etc.</p>
</Modal>

Accessibility Notes

Inside the app:

/** @jsx React.DOM */

var React = require('react');
var Modal = require('react-modal');

var appElement = document.getElementById('your-app-element');

Modal.setAppElement(appElement);
Modal.injectCSS();

var App = React.createClass({

  getInitialState: function() {
    return { modalIsOpen: false };
  },

  openModal: function() {
    this.setState({modalIsOpen: true});
  },

  closeModal: function() {
    this.setState({modalIsOpen: false});
  },

  handleModalCloseRequest: function() {
    // opportunity to validate something and keep the modal open even if it
    // requested to be closed
    this.setState({modalIsOpen: false});
  },

  render: function() {
    return (
      <div>
        <button onClick={this.openModal}>Open Modal</button>
        <Modal
          closeTimeoutMS={150}
          isOpen={this.state.modalIsOpen}
          onRequestClose={this.handleModalCloseRequest}
        >
          <h1>Hello</h1>
          <button onClick={this.closeModal}>close</button>
          <div>I am a modal</div>
          <form>
            <input />
            <input />
            <input />
            <input />
            <input />
            <br/>
            <button>hi</button>
            <button>hi</button>
            <button>hi</button>
            <button>hi</button>
          </form>
        </Modal>
      </div>
    );
  }
});

React.renderComponent(<App/>, appElement);