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9 年
JavaScript闭包(closure)
JavaScript变量分为全局变量和局部变量。Javascript语言的特殊之处,就在于函数内部可以直接读取全局变量,而在函数外部自然无法读取函数内的局部变量。当你需要在函数外调用函数内的局部变量时,此时就要用到一些方法。这个过程就是闭包。 ###一、JavaScript为 ...
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