Developer Reference
postMessage events and integration hooks for building custom experiences on top of RentalBeam widgets.
Available onFreePlusPro
RentalBeam widgets communicate with the parent page through postMessage: the booking widget emits events when a guest selects or clears dates, and the calendar widget accepts an inbound message to switch its theme. You can hook into these from any page where a widget is embedded.
Plan requirements
| Feature | Free | Plus | Pro |
|---|---|---|---|
| Calendar widget (theme inbound event) | ✓ | ✓ | ✓ |
| Booking widget postMessage outbound events | - | - | ✓ |
In this section
- postMessage events - outbound booking events, the event envelope, a Wix Velo example, and the inbound theme control.