A comprehensive guide to mastering the React useEffect hook, which allows developers to handle side effects, manage component life cycles, and execute code only when specific changes occur. Covers basic syntax, running effects conditionally, cleaning up effects, using multiple effects, and common use cases such as updating the document title, fetching data from an API, subscribing and unsubscribing to events, and animating components.
Table of contents
Mastering React useEffect Hook: A Comprehensive GuideWhat is the useEffect hook?How to use the useEffect hook?Basic syntaxRunning effects conditionallyCleaning up effectsUsing multiple effectsCommon use cases of useEffect hookUpdating the document titleFetching data from an APISubscribing and unsubscribing to eventsAnimating componentsConclusionFAQs1. What is the difference between useEffect and useLayoutEffect ?2. How do you update state inside useEffect ?3. Can useEffect be used in class components?4. What is the dependency array in useEffect ?5. What is the cleanup function in useEffect ?Sort: