React is ...

• Isomorphic

It can run on the server or the front end.

• ReactJs employs Virtual DOM

• ReactJS has a unidirectional data flow

• React allows for data binding. Change in the data updates the component.

• Open-closed principle.

Properties exposed to the component user. 

Objects open for extension but closed for modification.

=> SOLID design principle.

Robert C. Martin‘s SOLID design principle (https://stackify.com/solid-design-open-closed-principle/)

• Single Responsibility Principle
• Open/Closed Principle
• Liskov Substitution Principle (design contract - the child subclasses accept the same input parameter values)
• Interface Segregation Principle (don't have bloated polluted interfaces). Child inherits from the parent and implements its own interface
• Dependency Inversion (High level modules should be easily reusable and unaffected by changes). Details should depend on abstractions. Abstractions do not depend on details.