Astro 3.4: Page Partials

// pages/index.astro
<form hx-post="/partials/todos" hx-target="#todo-list" hx-swap="afterbegin">
	<input type="text" id="txtTodo" name="todo" />
</form>
<ul id="todo-list"></ul>

// pages/partials/todos.astro
---
export const partial = true;

const formData = await Astro.request.formData();
const todo = formData.get("todo")?.toString();
---
<li>{todo}</li>