1) What is useMemo in React? 2) What is useContext in React JS? 3) When does component Re-render? 4) What is the use of useCallback hook? 5) for(var i=0;i<5;i++){ setTimeout(()=>{ console.log()i; }); } What is the output of the above code? What changes do I need to make to get '0 1 2 3 4' as output. 6) Tell me about any challenge you came across while building a project and how did you solve it?
1. self introduction 2. rate your front end skills range from 1-10 3. ask about past work experience 4. ask about general behavioural questions
Tell us about your background.
What is output of inner join, outer join, left join and right join for given two tables?
Differences between useCallback and useMemo.
Promises useMemo Memo Redux Auto increment counter with progress bar
Telephonic Round:- They asked basic ReactJS/ HTML/ CSS related questions, like virtual dom, lifecycle methods, == & === difference, react hooks, i.e., useState & useEffect, useMemo, useCallback, CSS Flexbox, align-items & justify-content result if the flex-direction is set to row and next it's set to column, etc.
what are hooks, name few
difference between class and functional component
About my self and react basics
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