I received a call from HR asking for a face-to-face interview on a weekday. There were two rounds, and mostly fundamental questions were asked. The interviewers were nice people, although a couple of times their concepts were not very clear. After the rounds, they took me for lunch. After lunch, they said the next two rounds would be next week as the interviewers were on leave. Before I left, the HR said my level was far below the desired level, so I could leave for the day.

How to position a div – horizontally and vertically aligned with CSS.

Concepts on CSS properties: position – static, absolute, relative, and fixed.

Write a polyfill for map and reduce.

javascript console.log('a'); console.log('b'); setTimeout(() => console.log('c')); console.log('d');

Explain the output and some variations with setTimeout.

javascript var a = {a: 1}; var b = Object.create(a); console.log(a); console.log(b); a.a = 2; console.log(b.a);

The interviewer got confused and said that the prototype is copied to b. If we change a.a, it will not have any impact on b.a. But rather, b.__proto__ will have a link to a, and if we change or delete a.a, it will be reflected in b.

Why are API calls requested from componentDidMount and not from the constructor?

What is a pure component and how to create one?

Some questions on Angular 1.

What is a fat function?

Create a curry: callme(1)(2)(3)

But the interviewer was not aware of the function.length property. He had to Google it in the middle of the interview.

Difference between Object.assign and Object.create.

One question related to API, but was not able to complete as the interviewer was running out of time.