Functional-Light JavaScript is a balanced, pragmatic exploration of Functional Programming in JavaScript.Functional Programming (FP) is an incredibly powerful paradigm for structuring code that yields more robust, verifiable, and readable programs. If you've ever tried to learn FP but struggled with terms like "monad", mathematical concepts like category theory, or symbols like (lambda), you're not alone.Functional-Light programming distills the most vital aspects of FP—function purity, value immutability, composition, and more!—down to approachable JavaScript patterns. Rather than the all-or-nothing dogmatism often encountered in FP, this book teaches you how to improve your programs line by line.

功能性编程（FP）是一种令人难以置信的强大的代码结构范式，它能产生更强大的、可验证的、可读的程序。如果你曾经试图学习FP，但却为 "单体 "这样的术语、类别理论这样的数学概念或(lambda)这样的符号而苦恼，那么你并不孤单。Functional-Light编程将FP最重要的方面--函数纯洁性、值不可变性、组合等--简化为易于理解的JavaScript模式。本书不是FP中经常遇到的全有或全无的教条主义，而是教你如何逐行改进你的程序。