Embodiments of the present invention provide a method, system and computer program product for Web user interface component coordination. In an embodiment of the invention, a method for Web user interface component coordination can include receiving an event indicating a state change in one of many user interface components in a user interface for a Web application and determining whether or not remaining ones of the components are active and able to receive a notification of the event. In the former circumstance, notice of the event can be transmitted to the remaining ones of the components. However, in the latter circumstance, transmission of the notice of the event to the remaining ones of the components can be delayed until the components are determined to have become active and able to receive a notification of the event.