JSF中是否有“抽象”组件？

Question

Like div/span in HTML, I'd like to know if there has similar tags in JSF. It should be meaningless in HTML display, but only for organizing document composition.

For example:

<h:abstractGroup id="a" rendered="false">
    ...
</h:abstractGroup>

Answer 1

The rendering of a group of child components can be controlled with the facelet tag <ui:fragment> .

See also Alternative to ui:fragment in JSF

Answer 2

h：panelGroup正是这样做的，它也呈现为div或span，自动检测哪个是必需的。