Rajat Jain

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Software Engineer at Microsoft, writing about Software Development Concepts and trying it to create the right mental model in the minds of readers

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Easy Implementation of Promise in JS

Pinned article
Sep 10, 20216 min read

Disclaimer: In this post, I am not going to implement Promise exactly the way it has been done in the JS specification. This is more likely a frontend interview question and focusses more on the functional aspect of Promise. You can find the complete...

Easy Implementation of Promise in JS

4 must know cool features in Javascript

Aug 31, 20215 min read

We as frontend developers try to optimise the way our webpages work. Javascript, with its cool new features help us optimise the way we write code in a cleaner, better and less clumsier way. Following are the four cool features in JS, which every Jav...

4 must know cool features in Javascript

Put most of your logic in reducers

Aug 30, 20214 min read

The context of this blog is around Redux and its applications. To get a primer on Redux, checkout my blog: https://rajatexplains.com/basics-of-redux-in-20-minutes Reducers A reducer (also called a reducing function) is a function that accepts an ac...

Put most of your logic in reducers

Posts from @javascript_to_the_rescue

Aug 3, 20211 min read

https://www.instagram.com/p/CSGyh1fp4NH/ https://www.instagram.com/p/CQr_8F1gIvS/ https://www.instagram.com/p/CQcuan-gFiG/ https://www.instagram.com/p/CQarfaTg4HZ/ https://www.instagram.com/p/CL3aHOIgPEA/ https://www.instagram.com/p/CKQx3O_AZUJ/ http...

Posts from @javascript_to_the_rescue

Log Appropriately

Jul 14, 20213 min read

The right log message can make the difference between tracking down a problem in 2 minutes vs. spending days investigating mysterious behaviour. Unfortunately, knowing what to log and how to log it can often feel like an art. It’s certainly easy to f...

Log Appropriately

Shuffle an array in place

Jun 29, 20213 min read

❓Question Write the function shuffle(array) that shuffles (randomly reorders) elements of the array. Multiple runs of shuffle may lead to different orders of elements. For instance: let arr = [1, 2, 3]; shuffle(arr); // arr = [3, 2, 1] shuffle(arr)...

Shuffle an array in place