| Attributes |
| Name | Required | Request-time | Type | Description |
| binding | no | true | javax.el.ValueExpression | Using an EL expression, bind the component reference to a bean property, so that the component may be accessed in the bean. |
| changeEffect | no | true | java.lang.String | Effect to run to show the message when there was a different previous message. Values and default same as for initEffect. |
| changeEffectDuration | no | true | java.lang.String | Duration (also called "speed" in jQuery) of change effect. Values and default same as for initEffectDuration. |
| escape | no | true | boolean | Flag indicating that characters that are sensitive in HTML and XML markup must be escaped. Note: setting this to false may open up security issues. See XSS (Cross Site Scripting) Prevention Cheat Sheet. Default = 'true'. |
| for | yes | true | java.lang.String | Identifier of the component for which to render error messages. If this component is within the same NamingContainer as the target component, this must be the component identifier. Otherwise, it must be an absolute component identifier (starting with ":"). |
| id | no | true | java.lang.String | The component identifier for this component. This value must be unique within the closest parent component that is a naming container. |
| initEffect | no | true | java.lang.String | Effect to run to show the message when there was no previous message. One of "blind", "bounce", "clip", "drop", "explode", "fade", "fold", "highlight", "puff", "pulsate", "scale", "shake", "size", "slide". Default is no effect. |
| initEffectDuration | no | true | java.lang.String | Duration (also called "speed" in jQuery) of init effect. One of "slow", "_default", "fast", or an integer of milliseconds. Default is "_default". ("slow", "_default", "fast" currently equated to 600, 400 and 200 respectively in jQuery.) |
| lang | no | true | java.lang.String | Code describing the language used in the generated markup for this component. |
| redisplay | no | true | boolean | A flag indicating this UIMessage instance should redisplay FacesMessages that have already been handled. Default = 'true'. |
| rendered | no | true | boolean | Return true if this component (and its children) should be rendered during the Render Response phase of the request processing lifecycle. Default = 'true'. |
| showDetail | no | true | boolean | Flag indicating whether the "detail" property of messages for the specified component should be rendered. Default = 'true'. |
| showSummary | no | true | boolean | Flag indicating whether the "summary" property of messages for the specified component should be rendered. Default = 'false'. |
| style | no | true | java.lang.String | CSS style(s) to be applied when this component is rendered. |
| styleClass | no | true | java.lang.String | Space-separated list of CSS style class(es) to be applied when this element is rendered. This value must be passed through as the "class" attribute on generated markup. |
| title | no | true | java.lang.String | Advisory title information about markup elements generated for this component. |