JavaScript Examples Bible - UserWorks Technologies

66 JavaScript Examples Bible: The Essential Companion to JavaScript Bible
Listing 15-25 (continued)
alert(“This browser version does not support the feature.”)
}
}
fireEvent() Method
This is a paragraph (with a nested SPAN)
that receives click events.
Control Panel
Cancel event bubbling.
fireEvent(“eventType”[, eventObjectRef])
elementObject.fireEvent()
NN2 NN3 NN4 NN6 IE3/J1 IE3/J2 IE4 IE5 IE5.5
Compatibility ✓
Example
The small laboratory of Listing 15-26 enables you to explore the possibilities of
the IE5.5 fireEvent() method while reinforcing event bubbling concepts in IE.
Three nested element objects are assigned separate onClick event handlers (via
the init() function invoked after the page loads — although you can also set these
event handlers via onClick attributes in the tags). Each handler displays an alert
whose content reveals which object’s event handler was triggered and the tag name
and ID of the object that received the event. The default behavior of the page is to
allow event bubbling, but a checkbox enables you to turn off bubbling.
After you load the page, click the italic segment (a nested SPAN element) to
receive a series of three alert boxes. The first advises you that the SPAN element’s
onClick event handler is processing the event and that the SPAN element (whose ID