React Component Lifecycle MCQ Lifecycle Practice Questions

Direction: Choose the correct option

Which lifecycle method is called when a component is first inserted into the DOM?

A. constructor

B. render

C. componentWillMount

D. componentDidMount

Direction: Choose the correct option

Which method is invoked after a component updates due to state or props changes?

A. componentWillUpdate

B. componentDidUpdate

C. shouldComponentUpdate

D. componentDidMount

Direction: Choose the correct option

What is the purpose of shouldComponentUpdate?

A. To update the DOM

B. To initialize state

C. To prevent unnecessary re-renders by returning false

D. To perform side effects before update

Direction: Choose the correct option

Which method is called right before a component is removed from the DOM?

A. componentWillUnmount

B. unmount

C. componentDidUnmount

D. componentWillUnmount

Direction: Choose the correct option

In which lifecycle method should you make API calls in a class component?

A. componentDidMount

B. constructor

C. render

D. componentWillMount

Quipoin Menu