When to use class-based component in React

Question

在 React 16.8 中引入React Hooks以及在功能组件中控制组件状态和生命周期方法的所有新方法（例如useState和useEffect ，功能组件和基于类的组件之间的剩余区别不再明显，因此真正的区别是什么？

Answer 1

There are some lifecycle methods, which can't be emulated with React Hooks(egcomponentDidCatch() ).

In this cases you still need class components, but overall, you don't need them, and it's already totally fine, if you have an app without them.