How to listen for a change in props?

Question

React

Hello, how to understand that props has changed?
That is, I have some data in the component (com1), which I send from another component (com2) and I need to do some actions in com1, when the data in props changes

Answer 1

componentDidUpdate(prevProps) {
  if (prevProps.someProp !== this.props.someProp) {
    // do something
  }
}