What sites are good preparation for a React developer interview?

Question

JavaScript

In order not to create a bunch of topics, I will ask 3 questions at once:

1. What React test sites do you know?
   
2. What sites with puzzles for React do you know?
   
3. At JS interviews, they often ask tasks, but do they ask React at all? Or are they just asked to implement some part or interface of the site?
   

Sites can be not only Russian but also English

Answer 1

You may be asked completely different tasks, from what comes to my mind at the moment:
- tell me what values ​​of the position, display property you know
- ways to center an element
- how this works in javascript
- how prototypal inheritance works in javascript
- generators , async/await, promises, setTimeouts, which of them will be executed first, etc., tell us about microtasks
- variable hoisting
- tell us about HoC, what it is, where it is used
- tell us about render props
- tell us about portals
- tell us about context api
- react component lifecycle hooks
- what are middlwares, what is their purpose in principle, which ones you know, which ones you used
- how to reduce the number of re-renders, what optimization methods do you know
- CORS - ? i.e. usually there are questions mainly for talking in order to understand what the interlocutor is like, because one and the same question can be answered in completely different ways :)
- FP vs OOP comparison, their features and strengths / weaknesses
- composition vs inheritance
- various questions on patterns, for example, tell about the observer, how it works conceptually
- tell us about the testing pyramid

Answer 2

You can immediately see a suitable developer, he asks the right questions.