first commit

plugins/jquery-validation/additional/nieES.js

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+/*
+ * The NIE (Número de Identificación de Extranjero) is a Spanish tax identification number assigned by the Spanish
+ * authorities to any foreigner.
+ *
+ * The NIE is the equivalent of a Spaniards Número de Identificación Fiscal (NIF) which serves as a fiscal
+ * identification number. The CIF number (Certificado de Identificación Fiscal) is equivalent to the NIF, but applies to
+ * companies rather than individuals. The NIE consists of an 'X' or 'Y' followed by 7 or 8 digits then another letter.
+ */
+$.validator.addMethod( "nieES", function( value, element ) {
+	"use strict";
+
+	if ( this.optional( element ) ) {
+		return true;
+	}
+
+	var nieRegEx = new RegExp( /^[MXYZ]{1}[0-9]{7,8}[TRWAGMYFPDXBNJZSQVHLCKET]{1}$/gi );
+	var validChars = "TRWAGMYFPDXBNJZSQVHLCKET",
+		letter = value.substr( value.length - 1 ).toUpperCase(),
+		number;
+
+	value = value.toString().toUpperCase();
+
+	// Quick format test
+	if ( value.length > 10 || value.length < 9 || !nieRegEx.test( value ) ) {
+		return false;
+	}
+
+	// X means same number
+	// Y means number + 10000000
+	// Z means number + 20000000
+	value = value.replace( /^[X]/, "0" )
+		.replace( /^[Y]/, "1" )
+		.replace( /^[Z]/, "2" );
+
+	number = value.length === 9 ? value.substr( 0, 8 ) : value.substr( 0, 9 );
+
+	return validChars.charAt( parseInt( number, 10 ) % 23 ) === letter;
+
+}, "Please specify a valid NIE number." );