How Can I Pass Props to Children Components in React?

Passing Props to {this.props.children}

When defining generic components that accept child elements, it becomes necessary to pass down specific properties to all those child components. In the React component paradigm, this is achieved through the use of {this.props.children}. However, the question arises: how do you pass down those properties?

Cloning Children with New Props

React.Children provides a utility to iterate over and clone child elements, allowing you to create modified versions with new props:

const Child = ({ childName, sayHello }) => <button onClick={() => sayHello(childName)}>{childName}</button>;

function Parent({ children }) {
  function sayHello(childName) {
    console.log(`Hello from ${childName} the child`);
  }

  const childrenWithProps = React.Children.map(children, (child) => {
    if (React.isValidElement(child)) {
      return React.cloneElement(child, { sayHello });
    }
    return child;
  });

  return <div>{childrenWithProps}</div>;
}

Note: It's generally not recommended to use the cloneElement approach due to its potential fragility and potential type-safety issues.

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