Which event is best used to update state after props were changed?

What is the first place to start optimizing speed of ReactJs application?

Which of the following is used to trigger a UI update?

Which of the following is used for trigger a UI render update?

Which of the following methods change the state of the component?

Which of the following methods initiates custom state for the component?

Which of the following is a correct JSX code?

Which of the following are valid properties of the input node in ReactJS?

What is true about forceUpdate method in component?

What is true about context inside a component?

What is the correct value of the children proptype? propTypes: { children: React.PropTypes.string.isRequired }