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Q1 : When the context api is used?
Ans: Context API is commonly used in React applications to manage state that needs to be accessed by multiple components across the component tree. It provides a way to pass data through the component tree without having to manually pass props at each level.
Q2 : What is custom hook?
Ans: Custom hook in React is a reusable function that contains a set of stateful logic that can be shared between multiple components. Custom hooks allow you to extract reusable logic from components and create a standalone function that can be used across application.
Q3 : What is useRef in React?
Ans: useRef is a built-in hook in React that returns a mutable object with a current property. This hook allows you to keep a reference to a DOM element or any other value that you need to persist between renders.
Q4 : What is useRef in React?
Ans: useMemo is a built-in hook in React that allows you to optimize the performance of your components by memoizing the result of a function. This hook returns a memoized value that only recalculates if its dependencies change.
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