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Editorial Team
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Asked: 2026-05-13T16:09:37+00:00

I’ve made a button using HTMLPanelGrid and HTMLAjaxSupport (a4j:support from backing bean) that responds

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I’ve made a button using HTMLPanelGrid and HTMLAjaxSupport (a4j:support from backing bean) that responds to ‘onclick’.

The eventlistener registered with the HTMLAjaxSupport adds a component to the page (a different component with a different backing bean).

The problem is, the addition is not visible until I refresh the page or press another button that refreshes the display. I’m trying to figure out how to refresh the page.

To sum it up – I would like to know how to refresh a visual component backed up by a backing bean after the backing bean had changed. (The refresh should occur after clicking an ajax supported component)

Thank you!

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1 Answer

  1. Editorial Team

    all <a4j: tags have the reRender attribute. It should point to the id of the object/area you want to refresh.

    Note that if a component has been hidden, you must reRender its parent. For example:

    <h:panelGroup id="newComponentWrapper">
<!-- your component goes here -->
</h:panelGroup>
...
<a4j:support reRender="newComponentWrapper" .. />

    And another advice – avoid using the binding attribute – in 95% of the cases you can go without it.

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