There was only one round in my case and most problems were based on javascript the last few minutes were asked about react problems and the last problem was based on CSS. All the problems of javascript based on the core concept.

Js Round: Easy-level leetcode problem which we need to solve in javascript. And some core concepts of javascript such as higher-order function, closure, event loop and promises. React Round: useRef, useLayout, and useEffect tricky question were asked.