Steps to Reproduce

http://zkfiddle.org/sample/39mq57t/3-fragment-forEach
using fragment with forEach with begin / end:

		<forEach begin="0" end="3">
			<button label="@load(each)"/>
		</forEach>

Current Result

Error in JS console:

Expected Result

fragment should iterate on the variable as when using shadow forEach in java / zul

Debug Info

The JS code breaks because the "items" attribute is undefined.
The zk$$forEach method tries to access items.length wich causes a NPE at client side.
https://github.com/zkoss/zkcml/blob/35ee33e1f1f7a5357598d36c3adde3a5b153c82c/zkmax/src/archive/web/js/zkmax/wgt/Fragment.js#L184

Root Cause

Workaround