From the OpenReplay Blog
How IndexedDB Compares to LocalStorage and SessionStorage
Compare IndexedDB, LocalStorage, and SessionStorage by capacity, performance, and data types to select the right client-side storage API for your app.
Creating Interactive Charts with JavaScript
Build interactive JavaScript charts using the Canvas API and Chart.js, with hover effects, tooltips, real-time updates, and performance optimization techniques.
Building Smooth Carousels with Pure CSS
Build CSS carousels with scroll-snap, scroll-button pseudo-elements, and keyframe animations without JavaScript libraries or extra dependencies.
Adding Confetti Effects with JavaScript: A Fun Walkthrough
Add celebratory confetti effects using js-confetti, canvas-confetti, or vanilla Canvas, plus best practices for cleanup and mobile performance.
CSS Math Functions: A Guide to cos() and sin()
CSS cos() and sin() functions power circular layouts and wave animations using unit circle math, removing the need for JavaScript calculations.
How to Choose a Node.js Framework: Key Factors to Consider
Compare Express, Fastify, NestJS, and Koa on performance, scalability, and security to select the right Node.js framework for your specific project needs.
Adding a Theme to Your Astro Project
Add Astro starter templates or implement dark and light mode switching using CSS custom properties, theme toggles, and FOUC prevention scripts.
Getting Started with Kiro: AWS's New AI Coding Tool
AWS Kiro IDE combines spec-driven development, agent hooks, and steering files to help you build complex projects with structure and persistent AI context.
Vector Databases Explained in Plain English
Vector databases store data as mathematical embeddings and use ANN algorithms like HNSW to power semantic search and RAG in AI applications.
A Complete Guide to Switch Statements in JavaScript
JavaScript switch statements use strict equality to match values across multiple cases. See how break, fall-through, and block scope shape your control flow.
Reset chrome://flags Back to Default
Reset Chrome flags to default using chrome://flags on desktop and Android, fix browser crashes, and recover access when experimental features break Chrome.
Getting Started with InstantDB, the Modern Firebase
Build real-time React apps using InstantDB local-first sync, offline support, and automatic optimistic updates. No manual WebSocket management needed.
How to Protect Your API from Unauthorized Access
Build layered API security using JWT, OAuth 2.0, RBAC, rate limiting, and API gateways to block unauthorized access even with valid credentials.
Choosing the Right To-Do List Tool for Developers
Compare Todoist, Linear, Trello, and GTD tools to choose the right developer task manager based on API support, integrations, and workflow needs.
Making Sense of the GitHub Awesome Copilot Repository
The GitHub Awesome Copilot repository enables teams to configure custom instructions, reusable prompts, and chat modes for tailored AI assistance.
Best Practices for Securing OAuth in Web Applications
Secure OAuth 2.0 implementations using PKCE, refresh token rotation, DPoP, and the BFF pattern to protect SPAs from token theft and deprecated flows.
A Practical Introduction to Dyad, the Local AI App Builder
Build local AI apps with Dyad using natural language prompts, Neon Postgres, and flexible model support including GPT-4, Claude, and Ollama.
5 Awesome Developer Resources You Should Bookmark
Five developer resources worth bookmarking: Gemini Code Assist, Cline, Kilo Code, Exercism, and RegExr solve AI coding, regex debugging, and skill gaps.
How JavaScript Promises Work with the Event Loop
JavaScript Promises use the microtask queue to execute before setTimeout, giving you predictable async code once you grasp how the event loop prioritizes tasks.
Implementing Push Notifications with the Web Push API
Build push notifications with Service Workers, VAPID keys, and encryption. This implementation covers subscription management and browser-specific requirements.
Getting Started with GitHub Copilot Extensions
Install GitHub Copilot Extensions, build a Hello World agent with Node.js, and choose between VS Code extensions and MCP servers for future development.
Why Developers Are Talking About DuckDB
DuckDB enables fast embedded analytics without server setup. Readers will see how it queries Parquet files, integrates with Pandas, and compares to PostgreSQL.
Zero-Config Hono Deployments on Vercel
Deploy Hono on Vercel with zero config, reduce cold starts using Fluid Compute, and separate Hono middleware from Vercel routing middleware.
Getting Started with Kibo UI and shadcn/ui Components
Add Kibo UI components to a shadcn/ui React project and build accessible, composable interfaces including data tables, file uploaders, and AI chat features.