Explore the critical topic of feature detection performance in web development through this insightful JSConf talk. Delve into the intricacies of efficiently implementing feature detection techniques to enhance website performance and user experience. Learn about best practices, common pitfalls, and innovative approaches to optimize your code for various browser capabilities. Gain valuable insights from industry expert Alex Russell as he shares his knowledge and experience in this 26-minute presentation, equipping you with practical strategies to improve your web development skills and create more robust, performant applications.