Performing initialization and cleanup actions

Often, our React components need to perform actions when the component is created. For example, a common initialization action is to fetch API data that the component needs. Another common action is to make sure that any pending API requests are canceled when the component is removed. In this section, you'll learn about the useEffect() Hook and how it can help you with these two scenarios. You'll also learn how to make sure that the initialization code doesn't run too often.