Sure! One frequently asked ReactJS interview question is, “What are the differences between state and props in React and when would you use each one?

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Frequently Asked ReactJS Interview Question:

One commonly asked ReactJS interview question is, "What are the differences between state and props in React and when would you use each one?"

Differences between State and Props in React:

In React, state and props are both used to pass data and trigger re-rendering, but they have some key differences:

• State: State is a mutable object that is managed internally by a component. It can be updated using the setState method and is specific to a single component. Changes to the state trigger re-rendering of the component.
• Props: Props (short for properties) are read-only and are passed down from a parent component to a child component. They are used to pass data from one component to another. Changes to props do not trigger re-rendering unless the parent component re-renders with new props.

When to Use State and Props:

State should be used when data needs to be managed and updated within a component, such as user input or component-specific data. Props should be used for passing data from a parent component to a child component, enabling communication between components in a React application.

Understanding the differences between state and props is crucial for efficient and effective React development. Knowing when to use each one will help developers build robust and maintainable React applications.