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a4j
Tag jsFunction

The <a4j:jsFunction> component performs Ajax requests directly from JavaScript code and retrieves server-side data. The server-side data is returned in JavaScript Object Notation (JSON) format prior to the execution of any JavaScript code defined using the "oncomplete" attribute.

@author asmirnov@exadel.com

Tag Information
Component type org.richfaces.Function
Tag Name a4j:jsFunction
Renderer Type org.richfaces.FunctionRenderer
Handler Class None

Attributes
Name Required Type Description
action false javax.faces.el.MethodBinding MethodExpression representing the application action to invoke when this component is activated by the user. The expression must evaluate to a public method that takes no parameters, and returns an Object (the toString() of which is called to derive the logical outcome) which is passed to the NavigationHandler for this application.
actionListener false javax.faces.el.MethodBinding

MethodExpression representing an action listener method that will be notified when this component is activated by the user. The expression must evaluate to a public method that takes an ActionEvent parameter, with a return type of void, or to a public method that takes no arguments with a return type of void. In the latter case, the method has no way of easily knowing where the event came from, but this can be useful in cases where a notification is needed that "some action happened".

binding false javax.faces.component.UIComponent The value binding expression used to wire up this component to a component property of a JavaBean class
bypassUpdates false boolean If "true", after process validations phase it skips updates of model beans on a force render response. It can be used for validating components input
data false java.lang.Object Serialized (on default with JSON) data passed to the client by a developer on an AJAX request. It's accessible via "event.data" syntax. Both primitive types and complex types such as arrays and collections can be serialized and used with data
execute false java.lang.Object Ids of components that will participate in the "execute" portion of the Request Processing Lifecycle. Can be a single id, a space or comma separated list of Id's, or an EL Expression evaluating to an array or Collection. Any of the keywords "@this", "@form", "@all", "@none", "@region" may be specified in the identifier list. Some components make use of additional keywords
id false java.lang.String The component identifier for this component. This value must be unique within the closest parent component that is a naming container.
immediate false boolean Flag indicating that, if this component is activated by the user, notifications should be delivered to interested listeners and actions immediately (that is, during Apply Request Values phase) rather than waiting until Invoke Application phase.
limitRender false boolean If "true", render only those ids specified in the "render" attribute, forgoing the render of the auto-rendered panels
name true java.lang.String The name of the generated javascript function
onbeforedomupdate false java.lang.String The client-side script method to be called after the ajax response comes back, but before the DOM is updated
onbegin false java.lang.String The client-side script method to be called before an ajax request.
oncomplete false java.lang.String The client-side script method to be called after the DOM is updated
render false java.lang.Object Ids of components that will participate in the "render" portion of the Request Processing Lifecycle. Can be a single id, a space or comma separated list of Id's, or an EL Expression evaluating to an array or Collection. Any of the keywords "@this", "@form", "@all", "@none", "@region" may be specified in the identifier list. Some components make use of additional keywords
rendered false boolean Flag indicating whether or not this component should be rendered (during Render Response Phase), or processed on any subsequent form submit. The default value for this property is true.
status false java.lang.String Name of the request status component that will indicate the status of the Ajax request
value false java.lang.Object The current value of this component.

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