I recently interviewed with EY India for a Frontend Developer role. Here’s my experience and the questions asked in the 1st round.

• What are nested routes? Give pseudocode for it's syntax.
• Syntax of UseEffect Clean up?
• Difference b/w useEffect Hook & UseLayoutEffect Hook?
• What is useImperativeHandle Hook ?
• What is a Promise ? Give Pseudo code for it's syntax.
• Difference b/w Promise.allSetteled and Promise.race ?
• What is ContextAPI?
• What are Web Components?
• What is an Outlet?
• How to focus an input field without using Js onFocus in React, so that it's in focus when the page renders for the first time?
• Write pseudocode for Lazy Loading ?
• Difference b/w React.memo and useMemo ?
• Write code to Remove duplicates from string.
• Write code to Reverse the characters of words in a sentence.
• Given a scenario where you have multiple APIs to call parallely, what will I do?
• What is an event loop?
• You are given an api endpoint to fetch the results, take an user input, according to the user input, the api endpoint should change dynamically.
• O/p Question
  console.log(a);
  var a = 10;
  function test() {
  console.log(a);
  var a = 20;
  console.log(a);
  }
  test();
  console.log(a);
• O/p Question
  bar();
  var bar = function() {
  console.log('Hi');
  };
• What are Web Vitals ?
• What is Diffing Algorithm ?
• Difference b/w Shallow Copy and Deep Copy ?
• How can we achieve Deep Copy?