8 talks worth catching at JS Days 2026

JS Days 2026 (free, online, Sept 16-17) has a strong lineup this year. Here's my shortlist of talks worth catching, and why each one is worth an hour. Disclosure: I'm on the team at Sencha that helps run it.

A free two-day conference is easy to sign up for and then watch none of. So instead of dumping the whole agenda on you, here's a curated shortlist of the sessions I'd actually block time for, with a one-line reason for each.

1. The opening keynote (James Cahill, Sencha GM)
   Why catch it: keynotes set the frame for everything after them. This is the fastest way to get the throughline for the two days and the themes worth paying attention to, especially where AI and enterprise JavaScript are heading.

2. Crafting Custom AI Agents with JavaScript, React & ReExt (Marc Gusmano)
   Why catch it: this is the "AI moves from autocomplete to actual agents" talk. If you want to see how an agent gets wired into a real JavaScript and React app (tools, guardrails, state), it's a working build rather than slides.

3. AI-Powered UI Components (Andres Villalba)
   Why catch it: where AI fits into the front end beyond the chat box. Useful if you're trying to add AI to a UI without the user experience falling apart.

4. Generating Ext JS Apps on Top of Existing Databases with Indi Engine AI (Pavel Perminov)
   Why catch it: turning a database schema into a working app scaffold with AI. A concrete look at AI doing real application development, not just answering questions, which is exactly the CRUD-heavy work a lot of us do.

5. Techniques for Large Data Handling in Ext JS (Rafael Méndez)
   Why catch it: the 100k-row problem. Virtual scrolling, buffered rendering, and the techniques that keep a huge data grid from tanking your frame rate. If you have ever watched a table lock up the tab, this is the one.

6. Ext JS Dashboards for Supply Chain and Fleet Management (Wemerson Januario)
   Why catch it: a real-world look at building data-dense dashboards (grids, charts, live data) for a domain where performance and clarity actually matter.

7. Case Study: Developing a Recruitment Application (César Martell)
   Why catch it: an end-to-end case study is rare and useful. Seeing how the pieces fit together on a real app beats a dozen isolated how-tos.

8. Whatever lands in the final slot
   Why catch it: the lineup is billed as 8+ talks and a couple are still being announced. It is worth checking jsdays.io before the event, because the last additions are often the most timely.

How to register
It's free and online. Grab your spot here: Click Here (September 16-17).