Adoptable Cookbooks List

Looking for a cookbook to adopt? You can now see a list of cookbooks available for adoption!
List of Adoptable Cookbooks

Supermarket Belongs to the Community

Supermarket belongs to the community. While Chef has the responsibility to keep it running and be stewards of its functionality, what it does and how it works is driven by the community. The chef/supermarket repository will continue to be where development of the Supermarket application takes place. Come be part of shaping the direction of Supermarket by opening issues and pull requests or by joining us on the Chef Mailing List.

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Elevating UI Flexibility with React Portals: A Comprehensive Example DSC Resource

In this comprehensive blog post, we'll explore the concept of React Portals through a series of real-world examples, diving deep into their mechanics, use cases, benefits, and how they empower developers to achieve unparalleled flexibility in UI design.

Install & Usage Instructions

In the realm of web development, user interfaces are at the forefront of delivering memorable digital experiences. As applications grow in complexity and interactivity, ensuring that your user interface components are not bound by the constraints of the Document Object Model (DOM) becomes crucial. This is where React Portals step in, providing a powerful tool for rendering components outside the usual DOM hierarchy. In this comprehensive blog post, we'll explore the concept of React Portals through a series of real-world react portals example, diving deep into their mechanics, use cases, benefits, and how they empower developers to achieve unparalleled flexibility in UI design.

Understanding React Portals: Breaking DOM Boundaries

Before we dive into examples, let's establish a foundational understanding of what React Portals are.

React Portals are a way to render a component's subtree outside the parent DOM hierarchy. This means you can create components that visually appear in one part of the page but are actually attached to a different DOM element. Portals are particularly useful when dealing with scenarios where a component's rendering location doesn't align with its logical placement in the component hierarchy.

React Portals offer the following benefits:

DOM Flexibility: Components rendered through portals are not bound by the parent's DOM hierarchy, allowing you to create more versatile user interfaces.

Layering and Z-Index Control: Portals enable you to render components above other UI elements, making them ideal for implementing modals, tooltips, and popovers.

Global State Handling: You can render components at the root of the document or within specific contexts, making them suitable for managing global state or third-party integrations.

Real-World Examples of React Portals

Example 1: Modals

One of the most common use cases for React Portals is creating modals that overlay the rest of the UI. Instead of nesting the modal within the component hierarchy, which could lead to layout complexities, you can render the modal using a portal directly under the body element.

// Modal.js
import React from 'react';
import ReactDOM from 'react-dom';

const Modal = ({ children }) => {
const portalRoot = document.getElementById('modal-root');
return ReactDOM.createPortal(children, portalRoot);

export default Modal;

// App.js
import React, { useState } from 'react';
import Modal from './Modal';

function App() {
const [showModal, setShowModal] = useState(false);

return (
<button onClick={() => setShowModal(true)}>Open Modal</button>
{showModal && (
<div className="modal">
<h2>Modal Content</h2>
<button onClick={() => setShowModal(false)}>Close Modal</button>
export default App;

Example 2: Tooltips

Tooltips are another great example of using React Portal. You can render the tooltip outside the component hierarchy but position it relative to the triggering element.

// Tooltip.js
import React from 'react';
import ReactDOM from 'react-dom';

const Tooltip = ({ content, position }) => {
const tooltipRoot = document.getElementById('tooltip-root');
return ReactDOM.createPortal(
<div className={`tooltip tooltip-${position}`}>{content}</div>,

export default Tooltip;

// App.js
import React from 'react';
import Tooltip from './Tooltip';

function App() {
return (
Hover me!
<Tooltip content="I'm a tooltip!" position="top" />
export default App;

Benefits of Using React Portals

React Portals bring a range of benefits that elevate your UI development to a new level. Here's a closer look at the advantages you gain by incorporating React Portals into your projects:

Flexibility and Versatility: React Portals break down the limitations of the DOM hierarchy, enabling you to render components exactly where they make the most sense visually and functionally. This flexibility is particularly valuable for creating complex UI elements that transcend traditional boundaries.

Layering Control: With React Portals, you can exercise precise control over the stacking context and z-index of your components. This empowers you to manage overlays, modals, tooltips, and other UI elements with ease, preventing issues related to overlapping or obscured content.

Cleaner Component Structure: By rendering certain components outside their immediate parent hierarchy, you can maintain a cleaner and more organized component structure. This separation enhances the modularity and maintainability of your codebase, leading to more efficient development and easier debugging.

Global State Management: React Portals are ideal for handling global state management or integrating third-party components that need to be rendered at the root of the document. This capability streamlines the integration of external libraries and ensures consistent state handling across your application.

Enhanced User Experience: The ability to create overlays, modals, and tooltips through React Portals contributes to a smoother and more engaging user experience. By providing users with contextually relevant information or actions, you can enhance the overall usability of your application.


Event Bubbling: Events from a portal component will propagate to the parent hierarchy, which might have unintended consequences. Be mindful of event propagation when designing portal-based components.

Styling and Positioning: While React Portals offer greater flexibility, you might need to handle styling and positioning manually, especially when dealing with components positioned in relation to their triggers.


React Portals are a testament to the adaptability and ingenuity of the React library. They empower developers to create UI components that break free from the shackles of the DOM hierarchy, offering new possibilities in UI design, layering, and global state management. By understanding the mechanics and exploring real-world examples, you're equipped to harness the power of React Portals and enhance your web applications with unparalleled flexibility.

As you embark on your journey to craft dynamic and engaging user interfaces, consider the transformative impact of React Portals. They are the key to unbounded UI creativity and an essential tool in your web development arsenal. By incorporating React Portals into your projects, you're embracing a paradigm that not only empowers developers but also enriches user experiences in ways that were previously unattainable.

Recognizing that every project is unique, CronJ is committed to delivering tailored solutions that cater to your specific requirements. Whether you need a complex web application, a dynamic user interface, or any other React.js development service, CronJ can provide react developer for hire solutions tailored to your vision.


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