How does it work ?

When you add a button in an advanced appearance, you can choose the "trigger an event" action, like below:

The customButtonClick event is triggered when the user clicks on the button.

That way, you will be able to trigger the action you want. This can be to display a pop-up or to Subscribe with Google for instance.

In terms of configuration, that would be:

access.on('customButtonClick', () => {  
    { /* trigger your event */ }  
  }  
)

Is it mandatory to set a name to the triggered event ?

No, it is not.

Poool gives you the possibility to set a name in the button options:

However, this is not mandatory, as this is the customButtonClick event that is triggers. Naming your event can allow you to distinguish 2 custom buttons in a single appearance.

In terms of configuration, that would be:

access.on('customButtonClick', e => {  
  if (e.name === 'event_name')  
    { /* trigger your event */ }  
  }  
)

You will find more information in our customButtonClick JS event technical documentation 👉 right here.

If you have any questions, feel free to reach out !

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Updated on: 22/05/2026