code: function(result) {
  
          if (!this.destroyed && this.open) {
  
              var node = this.node;
  
              if (result !== undefined) {
                  this.returnValue = result;
              }
  
              removeClass(node, this.__name('show'));
              removeClass(node, this.__name('modal'));
  
              this.options.hideElement(node);
  
              this.open = false;
              this.blur(); // 恢复焦点，照顾键盘操作的用户
  
              removeEvent(document, 'focusin', this.focus);
              removeEvent(window, 'resize', this.reset);
          }
  
          return this;
      }
docs: 关闭浮层