React interview questions in Hindi #6 Explain React Hooks
0React Hooks are a feature introduced in React version 16.8 to enable functional components to have state, lifecycle methods, and other React features without the need for using class components. Before hooks, stateful logic could only be implemented in class components, leading to complex and verbose code. With hooks, functional components can now be more expressive, concise, and easier to understand.
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Hooks are functions that allow functional components to "hook into" React's internal features. They provide a way to manage component state, perform side effects, and access lifecycle methods without relying on class components. React provides several built-in hooks and also allows developers to create custom hooks for their specific use cases.'
Here are some of the commonly used built-in React Hooks:
useState: This hook allows functional components to manage local state. It returns a state variable and a function to update that state. By calling the state update function, React will re-render the component and update the state.
useEffect: This hook allows functional components to perform side effects, such as fetching data, subscribing to events, or setting up timers. It replaces the functionality of componentDidMount, componentDidUpdate, and componentWillUnmount in class components.
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