Explore functional style JavaScript in this 49-minute conference talk by Jonathan Mills. Delve into key concepts like purity, higher-order functions, and currying while learning how to write clean, maintainable, and reusable code. Gain insights into the world of functional programming, understand the meaning of 'no side effects', and demystify terms like 'monad'. Discover how to leverage functions as first-class objects in JavaScript and acquire the knowledge to discern between useful patterns and hype. Walk away with a solid understanding of where functional programming concepts are beneficial and where they may not be applicable in modern JavaScript development.