URLCleanup.js

    otherdatabases: {
        match: new RegExp("^(https?://)?(www\\.)?(rateyourmusic\\.com/|worldcat\\.org/|musicmoz\\.org/|45cat\\.com/|musik-sammler\\.de/|discografia\\.dds\\.it/|tallinn\\.ester\\.ee/|tartu\\.ester\\.ee/|encyclopedisque\\.fr/|discosdobrasil\\.com\\.br/|isrc\\.ncl\\.edu\\.tw/|rolldabeats\\.com/|psydb\\.net/|metal-archives\\.com/|spirit-of-metal\\.com/|ibdb\\.com/|lortel.\\org/|theatricalia\\.com/|ocremix\\.org/|trove\\.nla\\.gov\\.au/|(wiki\\.)?rockinchina\\.com|(www\\.)?dhhu\\.dk|thesession\\.org)", "i"),
        type: MB.constants.LINK_TYPES.otherdatabases,
        clean: function(url) {
            //Removing cruft from Worldcat URLs
            url = url.replace(/^(?:https?:\/\/)?(?:www\.)?worldcat\.org(?:\/title\/[a-zA-Z0-9_-]+)?\/oclc\/([^&?]+)(?:.*)$/, "http://www.worldcat.org/oclc/$1");
            //Standardising IBDb not to use www
            url = url.replace(/^(https?:\/\/)?(www\.)?ibdb\.com/, "http://ibdb.com");
            //Standardising ESTER to their default parameters
            url = url.replace(/^(?:https?:\/\/)?(tallinn|tartu)\.ester\.ee\/record=([^~]+)(?:.*)?$/, "http://$1.ester.ee/record=$2~S1*est");
            //Standardising Trove
            url = url.replace(/^(?:https?:\/\/)?trove.nla.gov.au\/([^\/]+)\/([^\/?]+)(?:\?.*)?$/, "http://trove.nla.gov.au/$1/$2");
            //Standardising RIC
            url = url.replace(/^(?:https?:\/\/)?(wiki|www)\.rockinchina\.com\/w\/(.*)+$/, "http://www.rockinchina.com/w/$2");
            //Standardising DHHU
            url = url.replace(/^(?:https?:\/\/)?(www\.)?dhhu\.dk\/w\/(.*)+$/, "http://www.dhhu.dk/w/$2");
            //Standardising The Session
            url = url.replace(/^(?:https?:\/\/)?(www\.)?thesession\.org\/([^\/]+)/display/(.*)+$/, "http://www.thesession.org/$1/display/$2");
            return url;
        },
        validate: function(url, type) {
          if url matches foo {
            if type == artist {
              return (test for artist) // Ie., true or false
            }
            else if type == event {
              return (test for event) // Ie., true or false
            }
          }
          return true; // If no test matches the parameters given, pass the "test"
        }
    }

...

MB.Control.URLCleanup = function (sourceType, typeControl, urlControl) {
    var self = MB.Object ();

    self.typeControl = $(typeControl);
    self.urlControl = $(urlControl);
    self.sourceType = sourceType;

    self.errorList = $('<ul class="errors" />').hide();
    self.typeControl.after(self.errorList);

    var validationRules = { };
    // "has lyrics at" is only allowed for certain lyrics sites
    validationRules[ MB.constants.LINK_TYPES.lyrics.artist ] = function() {
        return MB.constants.CLEANUPS.lyrics.match.test($('#id-ar\\.url').val(), 'event')
    };
    ...
    // Do tests for other databases
    validationRules[ MB.constants.LINK_TYPES.otherdatabases.event ] = function() {
        return MB.constants.LINK_TYPES.otherdatabases.validate($('$id-ar\\.url').val()
    }