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https://docs.jboss.org/richfaces/latest_3_3_X/en/devguide/html/a4j_support.html
The <a4j:support> component is the most important core component in the RichFaces library. It enriches any existing non-Ajax JSF or RichFaces component with Ajax capability. It enriches any existing non-Ajax JSF or RichFaces component with Ajax capability.
http://showcase.richfaces.org/richfaces/component-sample.jsf?demo=actionListener
The a4j:actionListener tag differs from the standard JSF tag in that it allows the listener to be attached in any of three ways: By listener method, using the listener attribute. By listener class, using the type attribute. By object binding, using the binding attribute.
https://developer.jboss.org/thread/4526
Oct 17, 2011 · However, then, the actionListener will NOT be invoked because the validation is failed on the second inputText So, in this particular cases you have: 1. add ajaxSingle="true" to the a4j:support OR 2. wrap h:inputText (the one with a4j:support) with a4j:region BTW, as far as you use h:messages instead of rich:messages, you cannot see the ...
https://stackoverflow.com/questions/11223283/action-not-called-on-a4jcommandbutton-with-inner-a4jsupport-onclick-event
Jun 26, 2012 · But I think that you can solve it by moving the reRender attribute from the <a4j:support> to the <a4j:commandButton>, so that it's only re-rendered when the default action completes. Or even better, just remove that <a4j:support> altogether, you don't seem to need it at all.
https://planet.jboss.org/post/using_richfaces_a4j_jsfunction_sending_an_ajax_request_from_any_javascript
Jun 03, 2010 · For example, a4j:commandButton will generate an HTML button that fires an Ajax request. a4j:commandLink will do the same but generates a link. a4j:support is always attached to another JSF component to enable sending an Ajax request based on some event supported by the parent component. a4j:poll which allows sending Ajax requests periodically.
https://www.howtobuildsoftware.com/index.php/how-do/giB/ajax-jsf-richfaces-ajax4jsf-a4jsupport-value-retrieved-from-hselectonemenu-is-always-null
If you want PHP to automatically recognize the data as array, you have to sent multiple parameters with the same name, each ending in []. For example: foo[]=1&foo[]=2 will be accessible in PHP as $_GET['foo'], returning the array array(1,2). More information can be …
https://javabeat.net/a4jsupport-how-to-use-action-attribute/
Jul 18, 2008 · a4j:support and action attribute This example program demonstrates how to use action attribute to update the server values and display in the screen. In this example user inputs are passed to update method and processed.
https://community.oracle.com/thread/1253846
Sep 01, 2009 · I would suggest using a value change listener on the h:selectOneMenu rather than an action listener on the a4j:support tag. This is the approach I've used on all of the rich faces projects that I've been involved with and it always seems to work fine.
https://docs.jboss.org/richfaces/latest_3_3_X/en/devguide/html/a4j_commandButton.html
The <a4j:commandButton> component is used in the same way as JSF <h:commandButton>. The difference is that in case of <a4j:commandButton> the components to be updated should be specified. The example above generates the following HTML code: < input type = "submit" onclick = "A4J.AJAX.Submit(request parameters);return false;" value = "Button" />
http://ac.aua.am/CIS/AVSL/Literature/JSF/eBooks/Ajax4JSF/ch06s21.html
The <a4j:support> component adds an AJAX support to any existing JSF component. It allows a component to generate asynchronous requests on the necessary event demand and with partial update of page content after a response incoming from the server.
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