Interview Articles – Rowdy Coders

Implementing Memorization in JavaScript

This is one of the most asked interview questions and Memorization in JavaScript refers to the technique of caching and reusing the output of expensive functions that have already been executed with the same arguments. This technique is commonly used in functional programming to improve the performance of complex functions. In this interview article, we […]

Creating a polyfill for Promise.race method

The Promise.race method allows developers to create a promise that resolves or rejects as soon as one of the promises in an iterable resolves or rejects. While widely supported in modern JavaScript environments, older browsers may lack native support for this method. In this Frontend interview article, we’ll explore how to create a polyfill for […]

May 16, 2024

interview, javascript

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Polyfill for Concurrent Asynchronous Operations-Promise.all

Promises in JavaScript provide a powerful way to work with asynchronous operations, allowing developers to write cleaner and more maintainable code. One of the most useful Promise methods is Promise.all, which enables concurrent execution of multiple asynchronous tasks. In this frontend interview article, we’ll explore the inner workings of Promise.all and create a polyfill to […]

Understanding the “this” Keyword in JavaScript

In the world of JavaScript, understanding context is paramount. The “this” keyword is the key to unlocking this contextual mystery. In this blog, we’ll delve into the depths of “this” in JavaScript, unravelling its nuances and shedding light on its behaviour in different scenarios. “this” refers to the object that is currently executing the code. […]

Debounce in JavaScript: Enhance Frontend Performance

In today’s world, optimizing Frontend performance is crucial for delivering fast and responsive user experiences. One common technique used to achieve this is Debounce, a method that helps control the frequency of function calls, particularly useful for handling events like scroll, resize, or input changes. In this article, we’ll delve into the concept of Debounce […]

Kotak 811 Interview experience – Frontend

The interview lasted around 1 hour and the interviewer is from the BarRaiser. Questions that were asked in Kotak 811 are of medium level. In the one-hour timeframe, the interviewer asked 2 questions one was on Javascript, and the other question was on React Native as I am being interviewed for a react native role. […]

Create a Blick click game – Machine coding round

Preparing for a technical interview often involves demonstrating proficiency in problem-solving and coding skills. In this blog post, we’ll tackle the creation of a Blink Click game which was asked in a ZebPay interview. So, the interviewer shared his screen and showed me the below image to make me understand about the game. I took […]

Creating a polyfill for the map array method in javascript

The map method is a powerful tool in JavaScript arrays that allows developers to transform each element of an array with a provided callback function. While widely supported in modern JavaScript environments, older browsers may lack native support for this method. In this blog post, we’ll explore how to create a polyfill for the map […]

Deep cloning Objects in JavaScript with Circular Reference Handling

In JavaScript, object cloning is a common task, but deep copying an object while also handling circular references presents a unique challenge. Circular references occur when an object contains a reference to itself or to another object that eventually leads back to the original object. In this blog post, we’ll explore how to implement a […]

Deep cloning an object in Javascript

In JavaScript, object cloning is a common task, but deep cloning, which involves creating a complete and independent copy of an object and its nested properties, presents unique challenges. Here, we’ll explore the concept of deep cloning and learn how to implement it effectively in JavaScript. What is Deep Cloning? Deep cloning refers to the […]

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