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7 年
浅谈JavaScript中的super指针.md
super关键字既可以作为一个函数调用(Base.call(this, args...)),作为函数时,super()只能用在子类的构造函数之中,用在其他地方就会报错。 此外,阮一峰老师认为super()函数在ES6中用来为类构造一个this指针,但这种说法其实是没道理的。 “第二个问题实际上是问 super ...
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