📄 the event system the dojo toolkit.mht
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Subject: The Event System | The Dojo Toolkit
Date: Sun, 2 Dec 2007 16:33:43 +0800
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<H2>The Event System</H2><!--Node: -->
<DIV class=3Dnode>
<DIV class=3Dsubmitted>Submitted by MattBowen on Sat, 05/12/2007 - =
21:19.</DIV>
<DIV class=3Dcontent>
<P>Dojo's event system offers a refreshing alternative to the normal =
JavaScript=20
events. With Dojo, you connect functions to one another, creating a link =
that=20
calls one function when another fires. This means that you can connect a =
function of your own to</P>
<UL>
<LI>a DOM event, such as when a link is clicked;=20
<LI>an event of an object, such as an animation starting or stopping;=20
<LI>a function call of your own, such as bar();=20
<LI>a topic, which acts as a queue that other objects can publish =
objects to.=20
</LI></UL>
<P>Your connected function is called when the event occurs. With simple =
events,=20
when it calls your function, dojo passes your function a normalized =
event=20
object, so that it can respond correctly, responding to keystrokes or =
stopping=20
default behavior. With topics, Dojo passes any subscribed functions the =
object=20
that was published. Dojo happily abstracts away all of the difficulty of =
cross-browser event systems, offering programmers a coherent event =
system that=20
acts consistently across browsers.</P>
<P>Dojo's event system is flexible and gives you a few options for =
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