skyquake/framework/utils/guid.js

   1
   2 /*
   3  *
   4  *   Copyright 2016 RIFT.IO Inc
   5  *
   6  *   Licensed under the Apache License, Version 2.0 (the "License");
   7  *   you may not use this file except in compliance with the License.
   8  *   You may obtain a copy of the License at
   9  *
  10  *       http://www.apache.org/licenses/LICENSE-2.0
  11  *
  12  *   Unless required by applicable law or agreed to in writing, software
  13  *   distributed under the License is distributed on an "AS IS" BASIS,
  14  *   WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  15  *   See the License for the specific language governing permissions and
  16  *   limitations under the License.
  17  *
  18  */
  19 /**
  20  * @return {string}
  21  */
  22 function GUID() {
  23   // http://byronsalau.com/blog/how-to-create-a-guid-uuid-in-javascript/
  24   return 'xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx'.replace(/[xy]/g, function (c) {
  25     var r = Math.random() * 16 | 0, v = c === 'x' ? r : (r & 0x3 | 0x8);
  26     return v.toString(16);
  27   });
  28 }
  29
  30 module.exports = GUID;