Skip to content

Instantly share code, notes, and snippets.

@adyontech

adyontech/gist:1f853bd4092ad956d2f75c6ffa00e9f8

Last active October 20, 2020 18:14
Show Gist options
  • Save adyontech/1f853bd4092ad956d2f75c6ffa00e9f8 to your computer and use it in GitHub Desktop.
Save adyontech/1f853bd4092ad956d2f75c6ffa00e9f8 to your computer and use it in GitHub Desktop.
Download ZIP
Front-end interview experience
Raw
gistfile1.md

Front-end interview experience

This is a post about my personal interview preparation & experience with more than a dozen companies.

DISCLAIMER: I never prepared for JS specific interview, my goal was to land a backend role, but KARMA SUCKS :P

Go to resources

TODO: ADD MORE INFO HERE.

Javascript Info (Best and most trusted for JS stuff).

Akshay's js channel (Few videos are good, more on this later).

Topics I got in interviews (JS)

  • Front-end optimization (check my blog)
  • Polyfill for:
    • Debounce (Akshay's video)
    • Throttle (Akshay's video)
    • Reduce (MDN)
  • PROMISES & CALLBACKS (VIP)
  • undefined vs null
  • call, apply. bind
  • "this", arrow function
  • strict mode
  • dom modification with js
  • event bubbling and capturing
  • currying
  • inheritance using functions (check my blog)
  • Garbage collector (Good To Know)
  • cookie vs local storage vs session storage

Topics I got in interviews (REACT)

  • Hooks (what & why)
  • Lifecycle
  • Redux (basic)
  • "Key" in rendering.
  • functional vs class comp

Code and system design (JS)

  • Implement "CSS sticky property with js" (I was allowed to google syntax :Sigh:)
  • carousel
  • Accordion
  • A decent UI from mock-up, API call, and all stuff (limited time)
  • lazy loading (surprisingly, smh I remembered the complete interaction observer boilerplate code.) :-)

Code and system design (React)

  • nested comment, something like Reddit (1.5 hrs) where a user can click on any comment and reply to it.
    • At that time it was hard for me, I was able to lay down the complete logic showing and did UI for replying to comments but in end, it was ~80%. However, I got through the round :)
  • Card shuffle, need to create a UI where on click: a deck of the card will be shuffled into 4 sets. It includes card shuffle and some logic that I am not able to recollect.
    • FAILED, I found it difficult to code react in codepen (VS CODE made me dumb :P) and I was not able to collect my thoughts, may due to pressure (This was a BIG NAME) ¯\(ツ)/¯
  • File tree, something like VS CODE file tree where you click on a folder and it will show (and hide) inner files.
  • Design a Hackernews like of UI, explain state management.

DS-ALGO

YES I FACED DS-ALGO QUES IN HALF OF THE COMPANIES.

I prefer Leetcode for general interview prep.

No JS was harmed during any of my interviews (sorry, bye :P)

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment