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详解JavaScript函数
函数分类:系统函数和自定义函数,在JS中,函数也是一种单独的数据类型。 在JS中总有一些函数是不属于任何一个对象或者类的,这样的函数我们就叫做全局函数 全局函数的访问方式: 直接通过方法访问 如果实参的个数小于形参的个数,未被赋值的形参的值为 ...
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