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bubbles Event Attribute

Event Object Reference Complete Event Object Reference

Definition and Usage

The bubbles event attribute returns a Boolean value that indicates whether or not the event is a bubbling event.

Event bubbling directs an event to its intended target, it works like this:

  • A button is clicked and the event is directed to the button
  • If an event handler is set for that object, the event is triggered
  • If no event handler is set for that object, the event bubbles up (like a bubble in water) to the objects parent

The event bubbles up from parent to parent until it is handled, or until it reaches the document object.

Syntax

event.bubbles
 

Example

The following example checks if the triggered event is a bubbling event:

<html>
<head>
<script type="text/javascript">
function getEventType(event)
  { 
  alert(event.bubbles);
  }
</script>
</head>
<body onmousedown="getEventType(event)">
<p>Click somewhere in the document. 
An alert box will tell if the 
event is a bubbling event.</p>
</body>
</html>

Try-It-Yourself Demos

Check if an event is a bubbling event

Event Object Reference Complete Event Object Reference

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