功能是一个在Javascr ipt中的函数式编程库。它定义了标准的高阶功能，如map, reduce (aka foldl) 和 select（又名滤波器）。它还定义功能，如咖喱，rcurry，部分功能应用也定义了函数如curry, rcurry, and partial部分函数应用。而所有这些函数接受字符串，如 X - > X+1“，”X+1“，或 +1 和更详细的函数（X）{ return X +1}同义。-Functional is a library for functional programming in Javascr ipt. It defines the standard higher-order functions such as map, reduce (aka foldl), and select (aka filter). It also defines functions such as curry, rcurry, and partial for partial function application　and compose, guard, and until for function-level programming. And all these functions accept strings, such as　x-> x+1 ,　x+1 , or　+1　as synonyms for the more verbose function(x) {return x+1}.