Reading notes about code for my future reference.
What was the motivation for introducing Hooks? It is difficult reuse stateful logic between components. Complex components are too complex. Class components are confusing in general.
What changes are important regarding implementing Hooks versus Component Classes? You dont have to refactor the entire code base. You can reuse state between all of the hierarchy.
Hooks allow you to reuse stateful logic without changing ___ _______. Your component Hierarchy.
Name two rules imposed by React Hook usage. You can split a component into smaller functions, and you can actually use functional hooks and components together.
How would you identify a custom Hook and why might you create one? You can identify a custom Hook by seeing if all state and effects are fully isolated. It will always have a use at the beginning of the naming convention as well.
What is a Hook? React Hooks are simple JavaScript functions that we can use to isolate the reusable part from a functional component.
When would I use the useState Hook? To keep track of strings, numbers, booleans, arrays, objects
If you were to add React state to a function component by declaring a state variable: Declare a state a variable called count, and set it to 0.
What does calling useState do? It declares a state variable.
What do we pass to useState as an argument? We pass initial state through the useHook.
What does useState return? Use state consist of an array with two values which is the inital or starting value of the state value.