React forwardRef

What is forwardRef?

forwardRef lets your component pass a reference to one of its children. It's like giving a direct reference to a DOM element inside your component.

Common uses for forwardRef:

• Focusing input elements
• Triggering animations
• Measuring DOM elements
• Integrating with third-party libraries

Basic Example

Here's a simple example of forwarding a ref to an input element:

import { forwardRef, useRef } from 'react';

const MyInput = forwardRef((props, ref) => (
  <input ref={ref} {...props} />
));

function App() {
  const inputRef = useRef();

  const focusInput = () => {
    inputRef.current.focus();
  };

  return (
    <div>
      <MyInput ref={inputRef} placeholder="Type here..." />
      <button onClick={focusInput}>Focus Input</button>
    </div>
  );
}

In this example:

• We wrap our input component with forwardRef
• The component receives a ref as its second parameter
• The parent can now control the input element directly