Array.isArray() 是 JavaScript 标准库中判断一个值是否为数组的权威方法，本笔记源自本仓库 javascript/check-if-something-is-an-array.md。读完本文，你将掌握 Array.isArray() 的完整用法、为何它优于 typeof 与 instanceof、底层 Polyfill 的工作原理，以及它在 TypeScript ...

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 ...

I left the DOM castle town of JavaScript and entered the GAS Castle in the Sky.What I did this time was read values from a ...

You can process array elements.

I drove its lattice-mcp tools by hand from a TypeScript client, checked every answer against grep, and hit five gotchas.

Typst now has support for variable fonts. Most fonts are distributed in a set of files containing their glyphs in different weights, in variations such as italic, bold, and so on. A recent development ...

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 ...

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 ...