Add Event Listeners by Markup Languages
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(Redirected from ZK Developer's Guide/ZK in Depth/Event listening & processing/Add Event Listeners by Markup Languages)
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The simplest way to add an event listener is to declare an attribute in a ZUML page. The value of the attribute for listening an event is any Java codes that could be interpreted by BeanShell.
<window title="Hello" border="normal">
<button label="Say Hello" onClick="alert("Hello World!")"/>
</window>