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之家 9 月 7 日消息，在今天的小米秋季旗舰新品发布会上，小米创办人、董事长兼 CEO 雷军发布了玄戒 O100 芯片。 据介绍，玄戒 O100 是 1.22TB/s 高带宽 AI 加速芯片，全球首款 6nm 3D 晶圆级堆叠先进封装，辅以先进混合键合工艺，键合间距逼近物理极限。 IT之家从 ...

"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 ...

The script ran to the end. Looking at the screenshot, the text is clearly visible in the input field. Yet, when I open the ...

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

Over the past year, the world’s attention has turned to economic chokepoints—with good reason. Iran has exercised its control over the Strait of Hormuz to gum up the global economy, and China has used ...

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 ...

Chrome zero-day CVE-2026-85046 is under active attack as the sixth actively exploited Chrome vulnerability of 2026. A type confusion flaw in Chrome's V8 JavaScript engine lets attackers run code ...