回调函数（callback）是 JavaScript 中无处不在的编程范式，从数组迭代到异步任务都离不开它。但“看似无害的函数直接用作回调”恰恰是 bug 的温床。本文以 30 Seconds of Code 仓库中的 callback-pitfalls.md为骨架，结合仓库源码逐层拆解 parseInt() 与 Array.prototype.map() 组合 ...

本文是 open-slide 项目中 Vercel React Best Practices 技能集中 JavaScript 性能优化规则 js-set-map-lookups 的深度展开。它解决的是前端 ...

Shallow Size：对象自身占用内存的大小，不包括它引用的对象。JavaScript 对象会将一些内存用于自身的说明和保存中间值。通常，只有数组和字符串会有明显的浅层大小。 Retained Size：这是将对象本身连同其无法从 GC root 到达的相关对象一起删除后释放的内存大小。

"It works on my machine." I'm sure you've said it or heard it at least once—in code reviews, in chat, or during incident post ...

You can process array elements.

To reduce the spread of diseases such as AIDS and hepatitis C, they handed out clean needles. To reduce the toll of overdoses ...

Spread the loveIn a world where we juggle multiple devices, cross-platform apps have become essential. Whether you’re switching from an Android phone to an iPad or accessing your work on multiple ...

Apple has announced that it's taking steps to tighten controls around a macOS setting called Full Disk Access (FDA) due to security risks posed by artificial intelligence (AI) agents. "Some developers ...

The runaway hit of smart glasses, now with a six-mic array, an action button and up to nine hours of battery. The Gen 2 is still $379. Gen 3 Costs 44,300 Rupees in India, 14,400 More Than Meta's First ...

१७ असोज, काठमाडौं । सरकार नागरिकको लागि गोठ बनाउँदा समेत नक्सा पास गर्नुपर्ने गरी ऐन बनाउन लागेको छ । तर गोठको नक्सा पास ...

१७ असोज, काठमाडौं । स्थानीय तहमा हाल प्रचलनमा रहेको झन्झटिलो कागजी नक्सा पास प्रणालीलाई अन्त्य गर्दै सरकारले घर निर्माणको ...