JSF HTML Tag Reference - Command Button

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12. JSF Tag Reference

Contents > JSF Tag Reference > JSF HTML Tags

10. JSF HTML Tag Reference

Contents > JSF HTML Tag Reference > h:commandButton

h:commandButton

The commandButton tag renders an HTML submit button that can be associated with a backing bean or ActionListener class for event handling purposes. The display value of the button can also be obtained from a message bundle to support internationalization (I18N).

Example:

<h:commandButton id="button1" value="#{bundle.checkoutLabel}" action="#{shoppingCartBean.checkout}" />

HTML Output

<input id="form:button1" name="form:button1" type="submit" value="Check Out" onclick="someEvent();" />

Tag Attributes

accesskey	String

The accesskey attribute is a standard HTML attribute that sets the access key that transfers focus to this element when pressed.

action	String

The action attribute accepts a method-binding expression for a backing bean action method to invoke when this component is activated by the user. An action method must be a public method with no parameters that returns a String. The returned string represents the logical outcome of the action (eg. "success", "failure", etc.) and is used by the JavaServer Faces MVC framework to determine which view to display next.

actionListener	String

The actionListener attribute accepts a method-binding expression for a backing bean action listener method that will be notified when this component is activated by the user. An action listener method must be a public method with an ActionEvent parameter and a void return type.

alt	String

The alt attribute is a standard HTML attribute that sets the alternate textual description rendered by this component.

binding	String

The value-binding expression linking this component tag to a backing bean property.

dir	String

The dir attribute is a standard HTML attribute that overrides the default text directionality for this component. The values accepted for this component are "LTR" (left-to-right) and "RTL" (right-to-left).

disabled	String

The disabled attribute is a boolean flag that when set to true indicates that this component should not receive focus or be included in a form submit.

id	String

The unique identifier value for this component. The value must be unique within the closest naming container.

image	String

The image attribute accepts an absolute or relative URL for the image to be displayed for this component instead of the standard HTML button widget. When set, this attribute changes the type of the resulting input element to "image".

immediate	String

The immediate attribute is a boolean flag indicating that component events should be sent to registered event listeners immediately rather than after the validation phase of the JSF request processing lifecycle. The immediate flag allows you bypass JSF validation for a particular component.

lang	String

The lang attribute is a standard HTML attribute that sets the code describing the language to be used in the markup generated by this component.

onblur	String

The onblur attribute sets the JavaScript code to execute when this element loses focus.

onchange	String

The onchange attribute sets the JavaScript code to execute when this element loses focus and its value changes after gaining focus.

onclick	String

The onclick attribute sets the JavaScript code to execute when the mouse pointer is clicked over this element.

ondblclick	String

The ondblclick attribute sets the JavaScript code to execute when the mouse pointer is double-clicked over this element.

onfocus	String

The onfocus attribute sets the JavaScript code to execute when the element receives focus.

onkeydown	String

The onkeydown attribute sets the JavaScript code to execute when a key is pressed down over this element.

onkeypress	String

The onkeypress attribute sets the JavaScript code to execute when a key is pressed and released over this element.

onkeyup	String

The onkeyup attribute sets the JavaScript code to execute when a key is released over this element.

onmousedown	String

The onmousedown attribute sets the JavaScript code to execute when the mouse pointer is pressed down over this element.

onmousemove	String

The onmousemove attribute sets the JavaScript code to execute when the mouse pointer is moved within this element.

onmouseout	String

The onmouseout attribute sets the JavaScript code to execute when the mouse pointer is moved away from this element.

onmouseover	String

The onmouseover attribute sets the JavaScript code to execute when the mouse pointer is moved onto this element.

onmouseup	String

The onmouseup attribute sets the JavaScript code to execute when the mouse button is released over this element.

onselect	String

The onselect attribute sets the JavaScript code to execute when the user selects the text contained by this element.

readonly	String

The readonly attribute is a boolean flag that when set to true prohibits changes to this element by the user. The element will continue to receive focus unless you set the disabled attribute to true.

rendered	String

A value-binding expression that evaluates to a Boolean condition indicating if this component should be rendered.

style	String

The style attribute sets the CSS style definition to be applied to this component when it is rendered.

styleClass	String

The styleClass attribute sets the CSS class to apply to this component when it is rendered.

tabindex	String

The tabindex attribute is a standard HTML attribute that sets the order in which this element receives focus when the user cycles through the elements using the TAB key. The value for this attribute must be an integer between 0 and 32767.

title	String

The title attribute is a standard HTML attribute that sets the tooltip text to display for the rendered component.

type	String

The type attribute sets the type of button to create for this component. The valid values for this attribute are "submit" and "reset". The default value for this attribute is "submit".

value	String

The value attribute sets the display value for the button rendered by this component.