| Attributes |
| Name | Required | Request-time | Type | Description |
| captchaSessionKeyName | false | false | javax.el.ValueExpression
(must evaluate to java.lang.Object)
| Determines the CAPTCHA session key name. |
| imageWidth | false | false | javax.el.ValueExpression
(must evaluate to java.lang.Object)
| Integer to indicate the CAPTCHA width. default is 290. |
| imageHeight | false | false | javax.el.ValueExpression
(must evaluate to java.lang.Object)
| Integer to indicate the CAPTCHA height. default is 81. |
| id | false | true | java.lang.String | Get a string which uniquely identifies this UIComponent within the scope of the nearest ancestor NamingContainer
component. The id is not necessarily unique across all components in the current view. |
| rendered | false | false | javax.el.ValueExpression
(must evaluate to boolean)
| A boolean value that indicates whether this component should be rendered.
Default value: true. |
| binding | false | false | javax.el.ValueExpression
(must evaluate to javax.faces.component.UIComponent)
| Identifies a backing bean property (of type UIComponent or appropriate subclass) to bind to this component instance. This value must be an EL expression. |