Learn how to create a custom query language for complex searches in web interfaces at this JSConf EU 2018 talk. Explore the limitations of click-based interfaces and text-based searches for large, flexible data structures. Discover the process of developing a custom query language that enables efficient and precise searches with minimal keystrokes. Gain insights into integrating this language seamlessly into web interfaces, understanding grammar construction, parsing techniques, and the benefits of implementing a Custom Query Language (CQL). Delve into topics such as keyword search, advanced search methods, English grammar principles, query grammar for specific use cases, parsing rules, and onboarding strategies for users.