hx-include

The hx-include attribute allows you to include additional element values in an AJAX request. The value of this attribute is a CSS query selector of the element or elements to include in the query.

Here is an example that includes a separate input value:

<div>
    <button hx-post="/register" hx-include="[name='email']">
        Register!
    </button>
    Enter email: <input name="email" type="email"/>
</div>

This is a little contrived as you would typically enclose both of these elements in a form and submit the value automatically, but it demonstrates the concept.

Notes