Programs interested in certain events will register javascript event listeners for those events and execute code when those events are received by calling addlistener() to register event handlers on the object.. Simple triggers and installable triggers let apps script run a function automatically if a certain event occurs. when a trigger fires, apps script passes the function an event object as an argument, typically called e.the event object contains information about the context that caused the trigger to fire.. Google maps events previous next click the marker to zoom - attach event handlers to google maps. click the marker to zoom. we still use the map from the previous page: a map centered on london, england..
Declarative event handlers the declarative event handlers provide a means to define rules consisting of declarative conditions and actions. conditions are evaluated in the browser rather than the javascript engine which reduces roundtrip latencies and allows for very high efficiency.. Marker interface for event handlers. all stock gwt widget and dom event handlers extend eventhandler.. Firing an event. to fire an event from your visualization, call the google.visualization.events.trigger() function. the function expects the following parameters: source visualization (typically this is the this value).; event name (string)..
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