Using Alpine.js version 2.7.3, a ponent can listen to DOM events using x-on:[event].[modifiers].

But what syntax is used to listen to event names that have dots, like bootstrap's show.bs.modal?

In Vue.js, this can be done by a custom directive (from this question), but I think custom directives can not be created in Alpine.js

Using Alpine.js version 2.7.3, a ponent can listen to DOM events using x-on:[event].[modifiers].

But what syntax is used to listen to event names that have dots, like bootstrap's show.bs.modal?

In Vue.js, this can be done by a custom directive (from this question), but I think custom directives can not be created in Alpine.js

• javascript
• dom-events
• alpine.js

3 Answers 3

You can target event names with dots by using the .dot modifier, which swaps any dashes for dots. For example, if you are going to target show.bs.modal you would do:

<div x-data>
    <div @show-bs-modal.dot="console.log($event)"></div>
</div>

Please see https://alpinejs.dev/directives/on#dot for details.

A round about way is to listen to the custom event name on the document and then re-dispatch the event with a different name that Alpine.js can handle.

document.addEventListener('event.with.dots', function(evt, p1, ...) {
  // params and references to elements will depend on your requirement
  alpineComponentElement.dispatchEvent(new Event('eventwithnodots', {bubbles: true}))
})

<div x-data>
  <div x-on:eventwithnodots="$event"></div>
</div>

It's not possible at the moment since Alpine.js uses dots (.) to denote directive modifiers.