class-vs-function-component.md

Class Component vs. Function Component

class vs. component difference on closure:

• CodeSandBox: class vs. function component compares how function components and classes "close over" values. Play with it.

  • Solution: Click "Follow", then quickly change profile and observe name in alert.
  • Explanation: this.props is mutable in class components and immutable (const) in function components.

• CodeSandBox: fix class component issue by storing the user at the time of the click.