This demo uses a simple onclick attribute on the button
to trigger our htmx function.
The button is defined like this:
<button onclick="htmx(this, 'get')" hx-get="partial.html">
Click me!
</button>
Clicking the button issues a real HTTP request to another
HTML file (check out your network panel!)
In the next section, we will
automatically wire up the event listener, such that we no longer
need onclick attributes or globally exposed functions.