Legacy React APIs
These APIs are exported from the
react package, but they are not recommended for use in newly written code. See the linked individual API pages for the suggested alternatives.
Childrenlets you manipulate and transform the JSX received as the
childrenprop. See alternatives.
cloneElementlets you create a React element using another element as a starting point. See alternatives.
createElementlets you create a React element. Typically, you’ll use JSX instead.
createRefcreates a ref object which can contain arbitrary value. See alternatives.
isValidElementchecks whether a value is a React element. Typically used with
PureComponentis similar to
Component, but it skip re-renders with same props. See alternatives.
These APIs will be removed in a future major version of React.
createFactorylets you create a function that produces React elements of a certain type.