Property:

org.zkoss.zul.invalidateThreshold

Applicable:
  • globally in zk.xml via <library-property>
  • nested in a zul file via <custom-attribute>

Default: 10
since 8.0.1

It specifies the threshold number of changed items of a model to invalidate a widget’s DOM elements for Grid, Listbox, Combobox. If the number of changed items (by adding or removing) is over the threshold, client widget will redraw its DOM elements instead of just rendering changed items only.

<listbox>
    <custom-attributes org.zkoss.zul.invalidateThreshold="200"/>
...
</listbox>