Yes, you can easily update the list after submitting the form using HTMX attributes.

Assuming your form posts to `/todos` and your list has `id="todo-list"`, you can add these attributes to your form:

`<form hx-post="/todos" hx-target="#todo-list" hx-swap="beforeend">`

Then, your `/todos` endpoint should return *only the HTML for the new todo item* (e.g., a `<div>` or `<li>`). HTMX will automatically append this HTML to the end of the `#todo-list` element upon a successful response.

This avoids needing any client-side JavaScript to handle the update.

I wrote a step-by-step guide showing this exact pattern for a Todo app, comparing it to the React way:

https://beyondit.blog/blogs/Replace-Your-Entire-React-App-with-20-Lines-of-HTMX-A-Step-by-Step-Guide

Key things for your server endpoint:

1. Process the form data.

2. Save the new todo.

3. Render *just the HTML fragment* for the new item.

4. Send that fragment as the response.