BrowserStack Frontend Software Engineer interview questions

Initially got a call from Recruiter, then interview started. There are 5 rounds. 3 technical rounds, 1 Director round, Final HR round. It was a nice experience, The questions that they asked were worthful. Be strong in JavaScript , React. Html and CSS basics is enough.

Round 1 (Online 45 min)-> rejected -Very standard react questions related to usestate useEffect hooks, rendering normal var vs useState var using UseEffect -Diff between arrow function and normal functions in js -When to use UseRef what use case can we store normal variables in that -the difference between creating an instance of an arrow and a normal function by using the new keyword - centre a div inside a div without using flex or grid -diffeent ways to inject a js file in HTML file