From the OpenReplay Blog
Building Infinite Scroll with HTMX
Build HTMX infinite scroll with intersect and revealed triggers, server-driven loaders, and pagination fallbacks that work without JavaScript.
Understanding the Factory Pattern in JavaScript
The Factory Pattern centralizes JavaScript object creation, simplifies dependency injection, and lets you swap implementations without changing calling code.
How JavaScript Closures Work
Closures capture bindings, not values in JavaScript. See how lexical scope, loop behavior, and memory management work so you can write reliable code.
Scanning Your Repo for Secrets With TruffleHog
Scan git repositories for secrets using TruffleHog, interpret verified findings, and automate credential detection with the TruffleHog GitHub Action.
Node.js API Best Practices in 2026
Apply Node.js API patterns covering Zod validation, Helmet headers, Pino logging, and graceful shutdown to build resilient production services.
How to Fix ERR_BLOCKED_BY_CLIENT in Chrome
Diagnose and fix ERR_BLOCKED_BY_CLIENT in Chrome by identifying blocking extensions, enterprise policies, and filter rules intercepting your network requests.
Creative Coding with p5.js
Build visual prototypes fast using p5.js creative coding in the browser. Compare Canvas API, WebGL, generative art, and when to use Three.js or D3.js instead.
How Modern Apps Handle Roles and Permissions
Modern apps require ReBAC, ABAC, and policy-as-code tools like OpenFGA and OPA to handle fine-grained authorization beyond static role-based access control.
HTMX vs Alpine.js: When to Use Which
Compare HTMX and Alpine.js across server-driven updates and client-side UI state to choose the right tool for your server-rendered application.
Styling Valid and Invalid Form States with CSS
CSS pseudo-classes user-valid and user-invalid prevent premature errors. Combine them with has selectors and ARIA attributes for accessible styling.
5 Chrome Extensions for Accessibility Testing
Five Chrome extensions including axe DevTools, WAVE, and Accessibility Insights let developers catch WCAG violations during active development.
How to Type Environment Variables in TypeScript
Add type safety to TypeScript environment variables using import.meta.env for Vite and ProcessEnv for Node.js, with runtime validation via Zod.
Best Copilot Alternatives for 2026
Compare GitHub Copilot alternatives including Cursor, Windsurf, and Claude Code across agentic workflows, multi-file edits, and frontend team use cases.
How Middleware Works in Node.js
Trace how Express middleware executes in order, how next controls the chain, and how Express 5 handles async errors in the request lifecycle.
The Linux Cron Cheatsheet
Schedule Linux cron jobs with confidence using correct five-field syntax, distro-aware environment tips, and a full comparison of cron versus systemd timers.
A Tour of Handy Linux Tools for Modern Devs
Modern Linux CLI tools like ripgrep, fzf, delta, and lazygit solve real frontend developer problems with faster performance and clearer output.
A Quick Guide to Hugging Face for Developers
Add AI capabilities to web applications using Hugging Face Hub, Transformers, Inference Providers, and Inference Endpoints without training models from scratch.
WebGPU vs WebGL: Why the Industry Is Moving On
Compare WebGPU and WebGL across pipelines, bind groups, compute shaders, and WGSL to decide when migrating your rendering workflow makes sense.
How to Stop a Page From Scrolling While a Dialog Is Open
Stop background scrolling when a modal dialog is open using overflow hidden, overscroll behavior, and reliable iOS Safari scroll lock techniques.
The State of JavaScript IDEs in 2026
Compare VS Code, WebStorm, Cursor, and Zed on AI integration, security posture, and agent workflows to choose the right JavaScript IDE for your team.
What to Do When Your API Keys End Up in a Repo
Know exactly how to revoke exposed API keys, clean Git history, and prevent secrets from reaching GitHub repos using push protection and secret scanning.
TypeScript in Node: The Practical Setup
Set up TypeScript in Node.js using ESM, tsc compilation, and native type-stripping to build production APIs and scripts with modern tooling.
How to Build a Minimal REST API in Node.js
Build a minimal REST API in Node.js using Express 5 with JSON parsing, proper status codes, and centralized error handling in about 80 lines of code.
A Quick Guide to Loading Indicators in Web Apps
Build better loading UX by choosing spinners, skeletons, or optimistic UI and implementing React Suspense boundaries with Next.js App Router loading states.