Filtering Eleventy Collections: Customizing Static Site Content

Managing content in a static site generator can quickly become overwhelming as your project grows. Eleventy collections allow you to group your content, but learning how to filter, limit, and mutate that data is the key to building truly dynamic layouts. This text-based course guides you through the foundational concepts of the Eleventy data cascade, teaching you how to transform raw markdown and data arrays into structured, presentation-ready feeds. You will learn to write custom JavaScript filters, register them in your configuration, and apply them directly within your templates. What you'll learn: Understand the core concepts of Eleventy collections and how data flows through your templates; Create custom JavaScript filters to sort, limit, and format collection data; Apply modern ES module syntax to write clean and maintainable configuration code; Implement asynchronous filters to handle complex data processing during the build step; Render filtered collections seamlessly using template languages like Nunjucks or Liquid. This course begins with essential definitions and configuration basics before moving into hands-on code examples and practical filtering techniques. It is designed for web developers and designers who have a basic understanding of HTML and JavaScript and want to take control of their static site architecture. Start structuring your static content more efficiently today.