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JS高级技巧(简洁版)
source link: https://juejin.im/post/5aeff683f265da0ba351f786
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高级函数 由于在JS中，所有的函数都是对象，所以使用函数指针十分简单，也是这些东西使JS函数有趣且强大 安全的类型检测 JS内置的类型检测机制并不是完全可靠的 typeof 操作符返回一个字符串，表示未经计算的操作数的类型，在大多数情况下很靠谱，但是当然还有例
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