导读：IIFE（Immediately Invoked Function Expression，立即调用函数表达式）是 JavaScript 中最经典也最常被误解的函数技巧之一。本文以 iife.md为骨架，结合本仓库中 arrow-functions.md、closures.md、use-strict.md等相关章节与源码级细节，系统拆解 IIFE 的语法构成、执行时机、作用 ...

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