What is the difference between using constructor vs getInitialState in React / React Native?

Question

I\'ve seen both used interchangeably.

What are the main use cases for both? Are there advantages / disadvantages? Is one a better practice?

Answer 1

The big difference is start from where they are coming from, so constructor is the constructor of your class in JavaScript, on the other side, getInitialState is part of the lifecycle of React . The constructor method is a special method for creating and initializing an object created with a class.