text: dop.util.uuid = function() {
      for (var i = 0, uuid = '', random; i < 32; i++) {
          random = (Math.random() * 16) | 0
          if (i === 8 || i === 12 || i === 16 || i === 20) uuid += '-'
          uuid += (i === 12 ? 4 : i === 16 ? (random & 3) | 8 : random).toString(
              16
          )
      }
  
      return uuid
  }
  