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 ...

由于算法完全基于原生数组方法与纯函数式组合（ reduce + find + every + map ），不依赖任何第三方库，可直接复制进现有 ES6 项目使用。 也可以参考仓库中 arrays-of-consecutive-elements.md 的 aperture / apertureMap 模式，将分组逻辑抽象为更通用的"连续窗口聚合"工具函数。

You can process array elements.

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