State and Props

React: Component Lifecycle Events

1. Based off the diagram, what happens first, the ‘render’ or the ‘componentDidMount’?

• render

1. What is the very first thing to happen in the lifecycle of React?

• Constructor

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

• constructor, render, React Updates, componentDidMount, componentWillUnmount

1. What does componentDidMount do?

• method invoked immediately after a component is mounted. If you need to load anything using a network request or initialize the DOM, it should go here

React State Vs Props

1. What types of things can you pass in the props?

• things you pass to the constructor of that class

1. What is the big difference between props and state?

• state is inside a component, props you pass into the component but handled outside the component

1. When do we re-render our application?

• change the state

1. What are some examples of things that we could store in state?

• when you want to change something