50 questions for “Custom Hooks”

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React Custom Hooks 5 React Hooks 2 Angular Pipes (Built-in & Custom) 1 Next.js Custom App & Document in Pages Router 1 React Concurrent Hooks (useTransition, useDeferredValue & useLayoutEffect) 1

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50 questions in 5 technologies

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1What are the rules you must follow when writing and using hooks, including custom hooks? React › Custom HooksReactCustom HooksIntermediate
2What is a custom hook in React and why would you create one? React › Custom HooksReactCustom HooksBeginner
3How is a custom hook different from a regular helper function? React › Custom HooksReactCustom HooksBeginner
4How would you write a custom hook to fetch data from an API and share that logic across components? React › Custom HooksReactCustom HooksIntermediate
5How would you build a custom hook that debounces a fast changing value, such as text typed into a search box? React › Custom HooksReactCustom HooksAdvanced
6What are the downsides of higher order components that led many developers to prefer custom hooks instead? React › Higher-Order Components (HOCs)ReactHigher-Order Components (HOCs)Advanced
7Why can you not use React hooks like useState inside the custom Document component? Next.js › Custom App & Document in Pages RouterNext.jsCustom App & Document in Pages RouterIntermediate
8What are hooks in React and why were they introduced? React › HooksReactHooksBeginner
9What are the rules of hooks, and why do they exist? React › HooksReactHooksAdvanced
10How do lifecycle hooks in Auto Scaling Groups let you customize instance launch and termination behavior? AWS › Auto Scaling GroupsAWSAuto Scaling GroupsAdvanced
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