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#cohort2026

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How Node.js Handles Multiple Requests with a Single Thread

2d ago · 9 min read · Introduction Node.js is often described as "single‑threaded," which confuses newcomers: how can a server handle thousands of connections with just one thread? This post explains the concept in plain l

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RHrajashree hungundpromises-with-raj.hashnode.dev

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Synchronous vs Asynchronous JavaScript

2d ago · 3 min read · Hey! Imagine you're doing tasks one by one — like brushing your teeth, then eating breakfast, then checking your phone. That’s basically how synchronous code works. But what if you could order food, a

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RHrajashree hungundpromises-with-raj.hashnode.dev

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Async/Await in JavaScript: Writing Cleaner Asynchronous Code

2d ago · 4 min read · Let’s be honest — if you’ve ever worked with asynchronous JavaScript, you’ve probably faced confusing code at some point. Callbacks… then Promises… and suddenly your code looks like a staircase 😵‍💫

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DSDinesh Swamijspolifils.hashnode.dev

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String Polyfills & Those Tricky Interview Questions in JavaScript

2d ago · 4 min read · A few weeks ago I was practicing for interviews and the interviewer casually said,“Implement .includes() without using the built-in method.” I blanked for a second. I had used str.includes() hundreds

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DSDinesh Swamispreadinjs.hashnode.dev

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Error Handling in JavaScript: Try, Catch, Finally – Why Your Code Should Never Crash in Production

2d ago · 7 min read · so hey everyone :- Last month I was building a simple dashboard for my portfolio project. Everything was working fine in development… until I deployed it. One wrong API response and the whole page wen

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DSDinesh Swamispreadinjs.hashnode.dev

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Spread vs Rest Operator in JavaScript: Finally Understanding the ... Magic

2d ago · 4 min read · hey Everyone.... For the longest time, I kept seeing those three dots ... in code and had no idea whether it was spread or rest. They looked exactly the same, but behaved completely differently. One d

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RHrajashree hungundpromises-with-raj.hashnode.dev

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Error Handling in JavaScript: Try, Catch, Finally

3d ago · 3 min read · Imagine you're writing some JavaScript code… everything looks fine… and suddenly 😅 your console throws a big red error. For example: let user = null; console.log(user.name); Boom 💥 — your program c

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SWSAGAR WADDENKERIfliesinexpress.hashnode.dev

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Handling File Uploads in Express with Multer

4d ago · 9 min read · Introduction File uploads are a very common feature in web apps — user avatars, documents, product images, etc. This guide walks you through the concepts, middleware role, simple examples (single & mu

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SWSAGAR WADDENKERImiddlewareblog.hashnode.dev

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What is Middleware in Express and How It Works

4d ago · 8 min read · Introduction Middleware is one of the most important concepts in Express. If you’re new to Express, think of middleware as small, reusable functions that sit between an incoming HTTP request and the f

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NPNikhil Prasharnikhilprashar.hashnode.dev

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The new keyword in JavaScript

4d ago · 6 min read · What the new keyword does. So let's first understand the problem statement, Why do we use the new keyword? The problem was that we need to dynamically create objects. We want to add values to objec

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Trending tags this week

How Node.js Handles Multiple Requests with a Single Thread

Synchronous vs Asynchronous JavaScript

Async/Await in JavaScript: Writing Cleaner Asynchronous Code

String Polyfills & Those Tricky Interview Questions in JavaScript

Error Handling in JavaScript: Try, Catch, Finally – Why Your Code Should Never Crash in Production

Spread vs Rest Operator in JavaScript: Finally Understanding the ... Magic

Error Handling in JavaScript: Try, Catch, Finally

Handling File Uploads in Express with Multer

What is Middleware in Express and How It Works

The new keyword in JavaScript