为什么 Set.has() 在查找项时比 Array.includes() 更快
原文英文，约900词，阅读约需3分钟。发表于：。Sometimes, when building applications, performance ends up being the key or at least a significant driver, especially when dealing with large datasets or real-time requirements. One of the most...
在构建应用时，性能至关重要，尤其是处理大数据集时。JavaScript中，Set.has()的查找时间复杂度为O(1)，比Array.includes()的O(n)更快，适合处理唯一值和频繁查找；而Array.includes()适合小数据集和重复值。
