Podcast
Questions and Answers
What is the purpose of the useEffect Hook?
What is the purpose of the useEffect Hook?
What is the name of the linter plugin that enforces the rules of hooks?
What is the name of the linter plugin that enforces the rules of hooks?
What type of use cases can custom hooks cover?
What type of use cases can custom hooks cover?
What is the name of the functions that are Hooks?
What is the name of the functions that are Hooks?
Signup and view all the answers
Are there any built-in Hooks that are less commonly used?
Are there any built-in Hooks that are less commonly used?
Signup and view all the answers
Study Notes
-
useEffect lets you run side effects after every render, including the first one.
-
useEffect is a unified API that lets you use componentDidMount, componentDidUpdate, and componentWillUnmount.
-
effects are declared inside the component so they have access to its props and state.
-
effects may optionally specify how to “clean up” after them.
-
Hooks let you organize side effects in a component by what pieces are related (such as adding and removing a subscription), rather than forcing a split based on lifecycle methods.
-
Hooks are JavaScript functions, but they impose two additional rules:
-
We provide a linter plugin to enforce these rules automatically.
-
Hooks are more of a convention than a feature. If a function’s name starts with ”use” and it calls other Hooks, we say it is a custom Hook.
-
You can write custom Hooks that cover a wide range of use cases like form handling, animation, declarative subscriptions, timers, and probably many more we haven’t considered.
-
There are a few less commonly used built-in Hooks that you might find useful.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
Description
Test your knowledge of React Hooks and useEffect with this quiz. Learn about how useEffect allows you to manage side effects and how Hooks enable the organization of side effects in a component.
