ReactJS Tutorial 22 : State In React, Props V/S State In React

Q: What is the concept of State in React applications?

A: State in React applications refers to the local state managed within a component to store and manage data that can change over time.

Q: Why is State necessary in React applications?

A: State is necessary in React applications to manage dynamic data that can change based on user interactions or other factors, allowing components to update and re-render when necessary.

Q: What are the differences between props and state in React?

A: Props are read-only and are passed down from parent components, while state is mutable and managed within a component. State is used for internal component data updates, while props are used for passing data from parent to child components.

Q: Why is immutability important when working with State in React?

A: Immutability ensures that the state object is not directly mutated but instead a new state object is created, helping in managing data changes efficiently and preventing unexpected side effects.

Q: How does State control the behavior of a component?

A: State controls the behavior of a component by allowing the component to respond to user interactions or other triggers, updating its internal state and triggering re-renders as needed.

Q: Why is State essential for managing data changes within a component?

A: State is essential for managing data changes within a component because it enables the component to store and update dynamic data, ensuring that the UI reflects the most current application state.

Q: What role does State play in components compared to passing props?

A: State within a component is used to manage and update internal data, affecting the component's behavior and appearance. Props, on the other hand, are passed from parent to child components and are read-only within the child components.