javascript - Regular expression not working with jquery form validation plugin -

i using form validation plugin , using regular expression validate uk post code. using this reference regular expression in author says can validate post code. when try submit form , every kind of string says invalid. have tried following (samples taken wikipedia here page

w1a 1hq  ec1a 1bb  m1 1aa  b33 8th 

here js code

$(document).ready(function(){  $.validator.addmethod("regex", function(value, element, regexp) {             var re = new regexp(regexp);             console.debug(re.test(value))             return this.optional(element) || re.test(value);         },         "post code not valid" );  $("#addpropertyform").validate({     rules : {          postcode : {             required : true,             regex: "(gir 0aa)|((([a-z-[qvx]][0-9][0-9]?)|(([a-z-[qvx]][a-z-[ijz]][0-9][0-9]?)|(([a-z-[qvx]][0-9][a-hjkstuw])|([a-z-[qvx]][a-z-[ijz]][0-9][abehmnprvwxy])))) [0-9][a-z-[cikmov]]{2})"         }     },     messages : {          postcode : {             required : 'post code required',         }     },     onkeyup: false,     onblur: true,     focuscleanup: true,     focusinvalid: false }); }); 

can 1 kindly me wrong code

there strange bits this.

first of all, example postcode posted in fact concatenation of 4 postcodes: w1a 1hq, ec1a 1bb, m1 1aa , b33 8th.

second, regexp written in different dialext 1 used in javascript (i not know one). expression [a-z-[ijz]] whould mean "any capital letter other i, j , z". in javascript means "any capital letter or - or [ followed ]". there unecessary parantheses in it.

i did not take time fix regexp. removed bits check if there other issues. 1 should match valid postcodes (and many invalid ones):

/(gir 0aa|[a-z][0-9][0-9]?|[a-z][a-z][0-9][0-9]?|[a-z][0-9][a-hjkstuw]|[a-z][a-z][0-9][abehmnprvwxy]) [0-9][a-z]{2}/