#javascript articles

RRealStackDevrealstackdev.hashnode.dev17h ago · 16 min read

Build a Full-Stack Next.js App with Supabase and Railway: A MERN Alternative

Disclosure: This article contains affiliate links. If you sign up through my links, I may earn a small commission at no extra cost to you. I only recommend tools I personally use. If you are familiar

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SKS. Katostrk.hashnode.dev7h ago · 5 min read

How I Test That LimiFile Doesn't Upload Selected Images to Its Server

One of LimiFile's core privacy claims is simple: Selected images are processed on the user's device and are not uploaded to a LimiFile server. The harder part is deciding what the implementation and

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WWebsiteGeekwebsitegeek.hashnode.dev3h ago · 4 min read

Embedding a Hand-Drawn Signature Into a PDF, Entirely in the Browser

E-signing a PDF sounds like it should be simple: let someone draw a signature, stick it on the page, done. The actual implementation has one genuinely tricky part that has nothing to do with drawing —

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BLBenny Lichtenwalnerbennylichtenwalner.hashnode.dev3h ago · 3 min read

Build log: a no contact tracker with no backend, no build step and no analytics

I'm a breakup coach. For eight years the most common thing I've asked clients to do is also the simplest: stop contacting your ex for 45, 60 or 90 days. And for eight years I've watched them track tho

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JSJayesh Sojitrajayesh-sojitra.hashnode.dev16h ago · 3 min read

5 Custom Hooks That Will Clean Up Your Codebase

Custom hooks are the most underused feature in most React codebases. They're just functions that use other hooks — but that simple idea lets you extract repeated logic into something reusable, testabl

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AHArnab Hazrastudent-financial-copilot.hashnode.dev15h ago · 7 min read

Student Financial Copilot: Building an AI-Powered Financial Planner for College Students

Introduction Anyone who has lived off a monthly allowance knows the drill. The money comes in, and somehow it's gone before the month is out — food, transport, subscriptions, the occasional impulse or

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SPSahil Prashardevwithsahil.hashnode.dev12h ago · 18 min read

Realtime Systems: Polling, WebSockets, SSE, and Pub/Sub

How does WhatsApp deliver a message almost instantly? You send a message. A second later, the other person gets it. There is no refresh button. You don't sit there thinking: “Let me refresh the page

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Ddivsince_1999toolsnippet.hashnode.dev12h ago · 3 min read

Why I Built 233+ Private Developer Tools That Run 100% in the Browser (Zero Server Uploads)

As developers, we reach for online utilities multiple times every single day. Whether it's formatting a malformed JSON payload from an API, decoding a JWT to inspect its claims, generating a multi-sta

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SPSahil Prashardevwithsahil.hashnode.dev13h ago · 18 min read

Modern Next.js: Routing, Layouts, Server Components, API Routes & Server Actions

Can a React application have both the frontend and backend inside the same project? That was one of the questions that made modern Next.js interesting to me. When I first started with React, I mostly

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SGSahil Guptasahilxdev.hashnode.dev19h ago · 8 min read

Object-Oriented Programming in JavaScript: Classes, Objects & Encapsulation Explained

Object-Oriented Programming in JavaScript: Classes, Objects & Encapsulation Explained So far in this series, we've covered variables, control flow, operators, loops, arrays, array methods, functions,

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