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柯里化是把接受多个参数的函数变换成接受一个单一参数的函数，并且返回一个新函数，这个新函数能够接受原函数的参数。下面可以通过例子来帮助理解。function adder(num) { return function(x) { return num + x; }}var add5 = adder(5);... 阅读全文
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Item 24: Use a Variable to Save a Reference toargumentsAn iterator is an object providing sequential access to a collection ofdata. A typical API prov... 阅读全文
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Item 23: Never Modify the arguments ObjectThe arguments object may look like an array, but sadly it does notalways behave like one. Programmers famil... 阅读全文
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Item 22: Use arguments to Create Variadic FunctionsItem 21 describes a variadic average function, which can process anarbitrary number of arguments a... 阅读全文
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Item 21: Use apply to Call Functions with DifferentNumbers of ArgumentsImagine that someone provides us with a function that calculates theaverage of ... 阅读全文