# State and Props

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## Questions

### React lifecycle

Based off the diagram, what happens first, the ‘render’ or the ‘componentDidMount’?- Render

What is the very first thing to happen in the lifecycle of React? - the Render Phase

Put the following things in the order that they happen: componentDidMount, render, constructor, componentWillUnmount, React Updates-

- constructor
- render
- React Updates
- componentDidMount
- componentWillUnmount

What does componentDidMount do?- invokes anything inside it when the component is mounted.

### React State Vs Props

What types of things can you pass in the props?- any JavaScript value, including objects, arrays, and functions

What is the big difference between props and state?- Props are used to pass data, and state is the data storage for each component

When do we re-render our application?- When state changes

What are some examples of things that we could store in state? Objects, arrays, variables.