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LocalStorage wrapper with expiration

Pinned article
Jun 22, 20213 min read

LocalStorage is a simple and handy client-side storage, but you should avoid using it because it is synchronous and cause performance issue by blocking the main execution thread. LocalStorage has no expiration time, data in the LocalStorage persists ...

Implement Promise.all

Jun 21, 20215 min read

This blog post is a part of the frontend interview series. Do check out other posts. Ignoring the cheesy subtitle of the blog 😛, let us get serious here for sometime. The interviewer won't ask you this direct question, mostly. At least if I was the...

Understanding Events in React

Jun 20, 20215 min read

Disclaimer: React official docsite ⚛️ is itself a good resource to understand events and their handling in the React ecosystem. Then, why do I have to write about it again? Well, in this blog post, I have explained what events in React are composed...

Find corresponding node in an identical DOM tree

Jun 19, 20213 min read

The following question derives it source from a Facebook interview ( source ). It is one of the most asked questions in the first (screening) round of frontend interviews. Without any further ado, let's jump onto the question. Question Given two iden...

How not to get REJECTED 101

Jun 15, 20215 min read

If you like to listen 🎧 to this article as a natural sounding 🔈 audio experience: I have taken a good number of technical interviews at my current company for the past 1.5 years and have been observing the candidates and taking notes. As a result o...

Arrow vs Regular functions

Jun 11, 20217 min read

If you like to listen 🎧 to this article as a natural sounding 🔈 audio experience: Most of us know that the usual way of declaring/defining functions in most languages is a simple regular syntax. In Javascript too, for a long time you could declare ...