Description

Adds a new htmx:trigger event that is fired whenever an HTMX AJAX request would be fired. In addition, the hx-trigger attribute can be specified on an element without an AJAX request, in which case it will simply fire the htmx:trigger event on the action specified by the attribute, and do nothing else.

This pattern allows for specifying client-side actions that don't require a network request, while remaining within the HTMX control paradigm.

This is a revised version of #1320, based on the discussion about how best to integrate its ideas. This PR implements two of the four proposed concepts:

• Support "naked" hx-trigger, make processVerbs set up a "fake" requestHandler that immediately terminates.
• Trigger a new non-bubbling htmx:trigger event

Example Usage

<button hx-trigger=click>Click me!</button>
<script>
htmx.on('hx-trigger', function(elt) {
  evt.detail.elt.innerText = 'Clicked!'
}
</script>