Sharing fresh technical insights
This article explains the fundamentals of rich‑text editors, compares textarea and contenteditable approaches, introduces Quill’s delta format and parchment model, and provides step‑by‑step guidance for creating custom blots, handling media uploads, and processing paste events for seamless cross‑platform rendering.
This article walks through the design and implementation of a web‑based video cutter, covering its overall architecture, the use of ffmpeg compiled to WebAssembly, OffscreenCanvas rendering, and worker threads, while providing code examples and practical tips for achieving smooth preview and export functionality.
JavaScript’s built‑in toFixed cannot reliably perform true rounding due to binary floating‑point precision limits, so this article explains the underlying IEEE‑754 representation, demonstrates common pitfalls, and provides a custom rounding algorithm with code examples to achieve accurate decimal rounding.
This article explains software testing fundamentals, classifies test methods, outlines general testing principles, dives into front‑end testing types and popular frameworks, provides code snippets for a minimal test runner, and compares TDD and BDD approaches, offering a comprehensive guide for developers.
This article examines why passwords are often insecure, explains how they should be stored using hash algorithms and salts, outlines common password‑weaknesses and system vulnerabilities, and introduces FIDO/WebAuthn as a modern, password‑less authentication solution.
This article explains why ESLint is essential for frontend development, details how its rule configuration works, walks through the CLI execution flow, and reveals the internal call stack that parses code into an AST, applies custom rules, and performs auto‑fixes.
This article walks through the core concepts and implementation steps of a minimal JavaScript compiler, covering tokenization, parsing into an AST, traversing with a visitor, transforming the tree, and generating target code, while also explaining the visitor pattern and polyfills.
This article walks through the fundamentals of Git’s internal architecture, explains how objects, hashes, and the repository directory work, and provides step‑by‑step Node.js code to implement core plumbing commands such as init, hash‑object, and cat‑file.
Short URLs are essential for many scenarios, and this article explores their components, including domain and path design, and dives into various path generation methods such as hash functions, auto‑increment IDs, distributed Snowflake algorithms, base‑62 encoding, and the trade‑offs between 301 and 302 redirects.
This article provides a comprehensive overview of Lit, covering its core concepts, key features, decorators, templating, styling, slots, event communication, lifecycle, directives, mixins, controllers, SSR support, and the surrounding ecosystem, offering practical code examples for developers.
