Writing articles, tweets, documentation—you always need to count words. Many word counters exist, but when mixing Chinese and English, the results …

Recently, I was developing a real-time chat feature with WebSocket on the backend. Debugging was painful—browser DevTools’ Network panel shows WebS…

I recently needed to convert between inches and centimeters for a project. Wrote a quick formula, but the result didn’t match the design specs—that…

Recently built a cross-timezone meeting scheduler and stepped into quite a few timezone pitfalls. Let me share what I learned about JavaScript time…

Duplicate data is everywhere. Log analysis, user list cleaning, keyword extraction… the scenarios are endless. Let’s dive into several deduplicat…

During a recent code review, I found this pattern scattered throughout the codebase:

I used to write nested loops when comparing two lists—finding common items, merging with deduplication, calculating differences. The code was messy…

I was working on form validation recently, dealing with various regular expressions. Testing each regex change required a page refresh - too tediou…

While building a radix converter tool, I revisited the fundamentals of number base conversion. Although parseInt and toString handle most cases…

As a frontend developer, I often need placeholder images: design assets aren’t ready, images are missing, or I’m building a quick prototype. I used…