docs: function saveLocalData() {
      if (!this.options.needLocalStorage) return null;
      var oThis = this;
      if (this.saveSettimeout) {
          clearTimeout(this.saveSettimeout);
      }
      this.saveSettimeout = setTimeout(function () {
          if (oThis.$sd_storageData == null || window.localStorage == null) return;
          var strogeDataStr = JSON.stringify(oThis.$sd_storageData);
          try {
              window.localStorage.setItem(oThis.localStorageId, strogeDataStr);
          } catch (e) {}
      }, 200);
  }