React Portals

Render children into a DOM node that exists outside the parent hierarchy.

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ReactDOM.createPortal(child, container) provides a way to render children into a DOM node outside the parent component tree, which is essential for modals, tooltips, and floating banners.

Key Takeaways: React Portals

Mastering React Portals helps you write clean and reliable React code. Follow standard conventions, test edge cases, and keep logic simple. Try running the code example below and complete the exercises to build confidence.

React Portals Code Example

React

import ReactDOM from "react-dom";

function Modal({ children }) {
  const modalRoot = document.getElementById("modal-root") || document.body;
  return ReactDOM.createPortal(
    <div className="modal-backdrop">{children}</div>,
    modalRoot
  );
}

Output

Renders modal outside standard DOM hierarchy

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React Portals

💡 Key Takeaways: React Portals

React Portals Code Example

Key Takeaways: React Portals