code: function() {
  			var self = this;
  			self.viewer = $.dom("<div class='mui-imageviewer'><div class='mui-imageviewer-mask'></div><div class='mui-imageviewer-header'><i class='mui-icon mui-icon-closeempty mui-imageviewer-close'></i><span class='mui-imageviewer-state'></span></div><i class='mui-icon mui-icon-arrowleft  mui-imageviewer-left'></i><i class='mui-icon mui-icon-arrowright mui-imageviewer-right'></i></div>");
  			self.viewer = self.viewer[0] || self.viewer;
  			//self.viewer.style.height = screen.height;
  			self.closeButton = self.viewer.querySelector('.mui-imageviewer-close');
  			self.state = self.viewer.querySelector('.mui-imageviewer-state');
  			self.leftButton = self.viewer.querySelector('.mui-imageviewer-left');
  			self.rightButton = self.viewer.querySelector('.mui-imageviewer-right');
  			self.mask = self.viewer.querySelector('.mui-imageviewer-mask');
  			document.body.appendChild(self.viewer);
  		}
docs: 创建图片预览组件的整体 UI