react.dev/docs/10.5-clone-with-props.md

id	title	permalink	prev	next
clone-with-props	Cloning ReactElement	clone-with-props.html	test-utils.html	create-fragment.html

In rare situations a element may want to change the props of a element that it doesn't own (like changing the className of a element passed as this.props.children). Other times it may want to make multiple copies of a element passed to it. cloneWithProps() makes this possible.

ReactElement React.addons.cloneWithProps(ReactElement element, object? extraProps)

Do a shallow copy of element and merge any props provided by extraProps. The className and style props will be merged intelligently.

Note:

cloneWithProps does not transfer key to the cloned element. If you wish to preserve the key, add it to the extraProps object:

var clonedElement = cloneWithProps(originalElement, { key : originalElement.key });

ref is similarly not preserved.