commandButton (RichFaces JSF components library Tag library documentation)
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## Ajax4jsf ( Legacy URL )
Tag commandButton

Renders an HTML "input" element. <br /> During Decoding: Obtains the Map from the "requestParameterMap" property of the ExternalContext. If the value in the Map for the value of the "clientId" property of the component is not null, create a javax.faces.event.ActionEvent around the component, and pass it to the queueEvent() method of the component. If the request is Ajax-performed, add its target IDs of the reRender property to the rendered areas list of the nesting AjaxContainer. <br /> During Encoding: Builds an AJAX.Submit JavaScript call for the "onclick" event. Renders the clientId of the component as the value of the "name" attribute. Renders the current value of the component as the value of the "value" attribute. If the "styleClass" attribute is specified, render its value as the value of the "class" attribute. Renders child components inside the HTML "input" element.

Tag Information
Tag Class | org.ajax4jsf.taglib.html.jsp.AjaxCommandButton
TagExtraInfo Class | None
Body Content | JSP
Display Name | Ajax CommandButton

Attributes
Name | Required | Request-time | Type | Description
accesskey | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | This attribute assigns an access key to an element. An access key is a single character from the document character set. Note: Authors should consider the input method of the expected reader when specifying an accesskey
action | false | false | `javax.el.MethodExpression` (signature must match `java.lang.Object action()`) | MethodBinding pointing at the application action to be invoked, if this UIComponent is activated by you, during the Apply Request Values or Invoke Application phase of the request processing lifecycle, depending on the value of the immediate property
actionListener | false | false | `javax.el.MethodExpression` (signature must match `void actionListener(javax.faces.event.ActionEvent)`) | MethodBinding pointing at method accepting an ActionEvent with return type void
ajaxSingle | false | false | `javax.el.ValueExpression` (must evaluate to `boolean`) | if "true", submits ONLY one field/link, instead of all form controls
alt | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | Alternate textual description of the element rendered by this component.
binding | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | The attribute takes a value-binding expression for a component property of a backing bean
bypassUpdates | false | false | `javax.el.ValueExpression` (must evaluate to `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 | false | `javax.el.ValueExpression` (must evaluate to `java.lang.Object`) | Serialized (on default with JSON) data passed on the client by a developer on AJAX request. It's accessible via "data.foo" syntax
dir | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | Direction indication for text that does not inherit directionality. Valid values are "LTR" (left-to-right) and "RTL" (right-to-left)
disabled | false | false | `javax.el.ValueExpression` (must evaluate to `boolean`) | When set for a form control, this boolean attribute disables the control for your input
eventsQueue | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | Name of requests queue to avoid send next request before complete other from same event. Can be used to reduce number of requests of frequently events (key press, mouse move etc.)
focus | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | id of element to set focus after request completed on client side
id | false | false | `java.lang.String` | Every component may have a unique id that is automatically created if omitted
ignoreDupResponses | false | false | `javax.el.ValueExpression` (must evaluate to `boolean`) | Attribute allows to ignore an Ajax Response produced by a request if the newest 'similar' request is in a queue already. ignoreDupResponses="true" does not cancel the request while it is processed on the server, but just allows to avoid unnecessary updates on the client side if the response isn't actual now.
image | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | Absolute or relative URL of the image to be displayed for this button. If specified, this "input" element will be of type "image". Otherwise, it will be of the type specified by the "type" property with a label specified by the "value" property.
immediate | false | false | `javax.el.ValueExpression` (must evaluate to `boolean`) | True means, that the default ActionListener should be executed immediately (i.e. during Apply Request Values phase of the request processing lifecycle), rather than waiting until the Invoke Application phase
lang | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | Code describing the language used in the generated markup for this component
limitToList | false | false | `javax.el.ValueExpression` (must evaluate to `boolean`) | If "true", updates on client side ONLY elements from this 'reRender' property. If "false" (default) updates all rendered by ajax region components
onbeforedomupdate | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | JavaScript code for call before DOM has been updated on client side
onblur | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: script expression; the element lost the focus
onchange | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: script expression; the element value was changed
onclick | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: a script expression; a pointer button is clicked
oncomplete | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | JavaScript code for call after request completed on client side
ondblclick | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: a script expression; a pointer button is double-clicked
onfocus | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: script expression; the element got the focus
onkeydown | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: a script expression; a key is pressed down
onkeypress | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: a script expression; a key is pressed and released
onkeyup | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: a script expression; a key is released
onmousedown | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: script expression; a pointer button is pressed down
onmousemove | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: a script expression; a pointer is moved within
onmouseout | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: a script expression; a pointer is moved away
onmouseover | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: a script expression; a pointer is moved onto
onmouseup | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | HTML: script expression; a pointer button is released
reRender | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.Object`) | Id['s] (in format of call UIComponent.findComponent()) of components, rendered in case of AjaxRequest caused by this component. Can be single id, comma-separated list of Id's, or EL Expression with array or Collection
rendered | false | false | `javax.el.ValueExpression` (must evaluate to `boolean`) | If "false", this component is not rendered
requestDelay | false | false | `javax.el.ValueExpression` (must evaluate to `int`) | Attribute defines the time (in ms.) that the request will be wait in the queue before it is ready to send. When the delay time is over, the request will be sent to the server or removed if the newest 'similar' request is in a queue already
size | false | false | `javax.el.ValueExpression` (must evaluate to `int`) | This attribute tells the user agent the initial width of the control. The width is given in pixels except when type attribute has the value "text" or "password". In that case, its value refers to the (integer) number of characters
status | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | ID (in format of call UIComponent.findComponent()) of Request status component
style | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | CSS style(s) is/are to be applied when this component is rendered
styleClass | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | Corresponds to the HTML class attribute
tabindex | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | This attribute specifies the position of the current element in the tabbing order for the current document. This value must be a number between 0 and 32767. User agents should ignore leading zeros
timeout | false | false | `javax.el.ValueExpression` (must evaluate to `int`) | Timeout ( in ms ) for request.
title | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | Advisory title information about markup elements generated for this component
type | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.String`) | submit|reset|image|button This attribute specifies a type of control to create. The default value for this attribute is "submit"
value | false | false | `javax.el.ValueExpression` (must evaluate to `java.lang.Object`) | The current value for this component

Variables
| No Variables Defined.

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