Method on

playwright/_impl/_sync_base.py:124–126

Registers the function ``f`` to the event name ``event``.

(self, event: Any, f: Any)

        return handler

    def on(self, event: Any, f: Any) -> None:
        """Registers the function ``f`` to the event name ``event``."""
        self._impl_obj.on(event, self._wrap_handler(f))

    def once(self, event: Any, f: Any) -> None:
        """The same as ``self.on``, except that the listener is automatically