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@ashutosh0

Ashutosh Kumar

@ashutosh0

Ashu

ranchiJoined January 2026

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Ashutosh Kumar's blogs

Understanding HTML Tagunderstandinghtmletagg.hashnode.dev1 post

Understanding DNS Recorddnsrecordsunderstanding.hashnode.dev1 post

Git Beginnersgitbeginnerss.hashnode.dev1 post

Css Selectorscssseletctor.hashnode.dev1 post

Understanding Network Deviceunderstandingnetworkingdevice.hashnode.dev1 post

About

Nothing here yet.

Available for

Nothing here yet.

Ashutosh Kumar's blogs

Understanding HTML Tagunderstandinghtmletagg.hashnode.dev1 post

Understanding DNS Recorddnsrecordsunderstanding.hashnode.dev1 post

Git Beginnersgitbeginnerss.hashnode.dev1 post

Css Selectorscssseletctor.hashnode.dev1 post

Understanding Network Deviceunderstandingnetworkingdevice.hashnode.dev1 post

Articles Threads Comments

Recently published

AKAshutosh Kumarinpolyfills-and-common.hashnode.dev

String Polyfills and Common Interview Methods in JavaScript

May 9 · 8 min read · This guide covers the most useful string methods, why and how to write polyfills, simple Unicode-aware utilities, common interview problems and solution approaches, and conceptual notes on how built-i

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AKAshutosh Kumarinyour-first-nodejs-application.hashnode.dev

Setting Up Your First Node.js Application — From Zero to Running Server

May 9 · 9 min read · There's a specific kind of frustration that comes with setting up a new technology for the first time. You follow a tutorial. Something doesn't match. The version is different. The command doesn't wor

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AKAshutosh Kumarinhandlesmultiplerequests.hashnode.dev

How Node.js Handles Thousands of Requests With Just One Thread

May 9 · 10 min read · The first time someone told me Node.js was single-threaded, I assumed it must be slow. One thread. One request at a time. Thousands of users hitting your server simultaneously. That math doesn't seem

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AKAshutosh Kumarinthe-new-keyword-javascript.hashnode.dev

What Actually Happens When You Type `new` in JavaScript

May 9 · 8 min read · Most developers use new every day without knowing what it does. They know it creates an object. They know it works with classes. They use it and move on. But if you asked them to explain what JavaScri

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AKAshutosh Kumarincallback-javascript.hashnode.dev

Callbacks in JavaScript: Why They Exist and Why You Need to Understand Them

May 9 · 8 min read · JavaScript has a reputation for being "weird." And honestly, a lot of that reputation comes from one thing: the way it handles time. Not time travel. Not timestamps. I mean the way JavaScript deals wi

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