silverstripe-userforms/thirdparty/jquery-validate/localization/methods_pt.js

(function( factory ) {
	if ( typeof define === "function" && define.amd ) {
		define( ["jquery", "../jquery.validate"], factory );
	} else {
		factory( jQuery );
	}
}(function( $ ) {

/*
 * Localized default methods for the jQuery validation plugin.
 * Locale: PT_BR
 */
$.extend($.validator.methods, {
	date: function(value, element) {
		return this.optional(element) || /^\d\d?\/\d\d?\/\d\d\d?\d?$/.test(value);
	}
});

}));