效果图
 
 使用方法:
1.下载文件后,把Magnifier整个文件放在你的资源目录下
2.放大镜css文件可以在Magnifier.js中修改(默认是自动加载的可以不理会)
layui.link('../Magnifier/css/MangniFier.css'); 3.插件定义方法有所改变,请悉知,如下:
      layui.config({
          base: '../Magnifier/' //假设这是你存放拓展模块的根目录
      }).extend({
          Magnifier: 'js/Magnifier'
          ,Event:'js/Event'  //你存放插件的目录
      });
      layui.use(['layer', 'form','Event','Magnifier'], function(){
          var layer =layui.layer
              ,evt =new layui.Event()
              ,Magnifier =new layui.Magnifier(evt,{
              largeWrapper: document.getElementById('gallery-preview'),<!--预览图容器(必须)-->
          });
          Magnifier.attach({
              thumb: '#lnk_thumb',//需要使用放大镜的图片元素(#id || .class)        
              zoom:3,//缩放比例
          });
      });配置信息 
 thumb(string):ID or class of the image element to magnify preceded by "#" or "."
 large(string):large image URL
 largeWrapper(string):ID of the element where large image will be appended
 zoom(int):initial zoom level
 zoomable(bool):enable zoom in / out using mouse wheel
 onthumbenter(callback):function to call on thumbnail enter event
 onthumbmove(callback):function to call on thumbnail move event
 onthumbleave(callback):function to call on thumbnail leave event
 onzoom(callback):function to call on zoom event
具体可查看官方Magnifier