JavaScript Archives : NileshBlog.Tech

238 : Product of Array Except Self

Nilesh Raut / December 29, 2025

Problem Restated (Very Simply) You are given an array: For each index, you need to calculate: Product of all elements […]

Bloom Filter in Express.js (with Real Example) – A Simple Yet Powerful Way to Prevent Duplicate Usernames

Backend Dev, Express JS, JavaScript, Node Js, Software Engineering, System Desgin, Web Development

Bloom Filter in Express.js (With Real Example and Dry Run Explained)

Nilesh Raut / November 5, 2025

🧠 What is a Bloom Filter? A Bloom Filter is a probabilistic data structure used to test whether an element

Backend Dev, Express JS, JavaScript, Node Js

NestJS vs. Express.js – Node.js Framework

Nilesh Raut / January 1, 2024

In the rapidly evolving landscape of Node.js, developers face a pivotal decision when selecting a framework for their backend development:

JavaScript

Promises in JavaScript: Def, Creation, Call, Pros and Cons, Behind-the-Scenes Work, Real world Example

Nilesh Raut / November 27, 2023

In the dynamic realm of JavaScript, promises stand as a pivotal concept, transforming the landscape of asynchronous programming. This comprehensive

Most asked interview question 2023 javacrpitsasd

JavaScript

Most Aksed Interview Javascript Question (Closure)

Nilesh Raut / November 23, 2023

Question aksed in Inteview : you have to write an Javscript code to print number in increasing order in each

JavaScript

Global and Local Variables in Javascript

Nilesh Raut / November 22, 2023

Hello, It is our 2nd day of learning Javascript, if you come directly here please check out how the javascript is

JavaScript

JavaScript : Execution Context ,Call Stack ,JavaScript Execution ?(Important to Understand)

Nilesh Raut / November 21, 2023

Hello Guys, It is your first day to start the javascript. Everyone Directly starts Javascript by learning the syntax rather

100 Days Challenge Leetcode, C++, JavaScript, leet code

Leetcode 1361. Validate Binary Tree Nodes (Medium)

Nilesh Raut / October 17, 2023

In the world of competitive programming, Leetcode stands as a ubiquitous platform where aspiring developers and programmers sharpen their skills.

100 Days Challenge Leetcode, C++, JavaScript, leet code

LeetCode 353. Snake Game – Medium

Nilesh Raut / October 14, 2023

Introduction LeetCode 353. Snake Game :Are you ready to dive into the world of game design and programming? In this

100 Days Challenge Leetcode, C++, JavaScript, leet code

Leetcode 2742. Painting the Walls

Nilesh Raut / October 14, 2023

Leetcode 2742. – Painting the Walls:Welcome to the world of dynamic programming, where we tackle complex problems with elegant solutions.

100 Days Challenge Leetcode, C++, JavaScript, leet code

leetcode 1095. Find in Mountain Array (hard)

Nilesh Raut / October 12, 2023

Welcome, fellow coding enthusiasts! Today, we’re going to embark on an exciting journey into the world of Leetcode and explore

100 Days Challenge Leetcode, C++, JavaScript, leet code

Leetcode 706. Design HashMap (Easy)

Nilesh Raut / October 4, 2023

Leetcode 706. Design HashMap:Hey there, coding enthusiasts! Welcome back to another exciting coding session. Today’s problem is a treat—literally! We’re going

100 Days Challenge Leetcode, C++, JavaScript, leet code

Leetcode 1512. Number of Good Pairs (easy)

Nilesh Raut / October 3, 2023

Leetcode 1512Number of Good Pairs:Hey there, coding enthusiasts! Welcome back to another exciting coding session. Today’s problem is a treat—literally!