The future of Drupal UX isn’t more JS; It’s smarter HTML with HTMX.

Prerequisite

- Working knowledge of Drupal site building and/or module development
- Familiarity with Drupal concepts such as render arrays, routing, and basic theming
- Basic understanding of HTML and HTTP request/response flow
- Some exposure to JavaScript/Ajax in Drupal (helpful but not required)
- No prior experience with HTMX is required.

Target Audience

Drupal developers (backend and frontend), Site builders working with dynamic interfaces, Technical leads evaluating frontend approaches in Drupal, Developers interested in reducing JavaScript complexity.

Outline

This session explores the evolution of dynamic interactions in Drupal, moving from the traditional Ajax API to the emerging HTMX approach in Drupal 11.3.

We begin with a brief overview of Drupal’s Ajax API, how it works, where it has been effective, and the challenges it introduces, including complexity, tight JavaScript coupling, and maintenance overhead.

Next, we introduce HTMX and the concept of hypermedia-driven interactions. The session explains how HTMX aligns with Drupal’s core architecture, including render arrays, routing, and caching, and how it enables developers to build interactive features with less custom JavaScript.

Key topics include:

- Evolution and limitations of Drupal’s Ajax API
- Core principles of HTMX and hypermedia
- Mapping HTMX concepts to Drupal architecture
- Implementing common use cases (dynamic forms, filtering, partial page updates)
- Comparing HTMX and Ajax API (DX, performance, debugging, progressive enhancement)
- Incremental adoption strategies in existing Drupal projects
- Current status of HTMX in Drupal core and contribution opportunities

The session includes real-world examples and a live demonstration to show how HTMX integrates into Drupal’s render pipeline and how developers can apply it in practical scenarios.

Attendees will gain a clear understanding of when and how to use HTMX in Drupal, along with the tradeoffs involved, enabling more maintainable and efficient frontend development.

Learning Objectives

- Understand the evolution and tradeoffs of Drupal’s Ajax API
- Explain the core principles behind HTMX and hypermedia-driven interactions
- Apply HTMX to real Drupal use-cases such as forms, filtering, and partial updates
- Compare HTMX with the traditional Ajax API to choose the right approach
- Identify ways to contribute to the HTMX initiative in Drupal core

Experience level
Intermediate