validator - Validator

Specifies a validator method called during Process Validations of MethodBinding to perform check the value of the control.

Syntax

validator="#{expression}"

<xp:this.validator>
	<![CDATA[#{javascript:script}]]>
</xp:this.validator>

Where expression is an expression and script is a script. Use $ instead of # to compute on page load instead of dynamically.

In Design mode, click All Properties and look for validator under data.

This property must evaluate to a public method that takes FacesContext, UIComponent, and Object parameters, and returns void.