Capítulo 16

Eventos - beforeunload

JavaScript

<script type="text/javascript">
var EventUtil = {
	addHandler: function() {...},
	getEvent: function(event) {...},
}
EventUtil.addHandler(window, "beforeunload", function(event) {
	event = EventUtil.getEvent(event);
	event.returnValue = "Permanecendo ou saindo agradecemos sua visita";
});
</script>

HTML

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