a service for producing v4 uuids

uuid.js

(function() {
    var app = angular.module('mcbUuid', [])
        .service('uuid', [Uuid]);

// http://stackoverflow.com/questions/105034/create-guid-uuid-in-javascript
//
    function Uuid() {
        this.newUuid = function() {
            var d = new Date().getTime();
            var uuid = 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function(c) {
                var r = (d + Math.random() * 16) % 16 | 0;
                d = Math.floor(d / 16);
                return (c == 'x' ? r : (r & 0x3 | 0x8)).toString(16);
            });
            return uuid;
        };
    }
    return app;
})();