Reading React lifecycle

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

based on the diagram render happens before componentDidMount

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

The mounting phase begins with the constructor.

Put the following things in the order that they happen:

constructor render componentDidMount React Updates componentWillUnmount

What does componentDidMount do?

componentDidMount is a method that will call after the component is rendered. It runs only once after the mount finishes.

Videos React State Vs Props

What types of things can you pass in the props?

expressions, functions, primitive data types, and objects/arrays can all be passed as props.

What is the big difference between props and state?

props are data being passed from parent to child as “html attributes”, props are immutable and cannot be modified state can be modified and changed, and can be passed to parent elements through 2 way binding.

When do we re-render our application?

during the update phase of the life cycle Anytime state is changed, the application will re-render

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

some things that can be stored in state are Form data, strings, Objects, Time/Dates, arrays, expressions, events