用dragsort +bootstrap+php实现 table拖动自动保持排序，前面加序号及时更新效果
php+ajax+dragsort插件+bootstrap美化
实现拖拽排序，保持序号不变，但真实排序保持变化。
代码说明：
my.js为自定义ajax请求，定义了数据接收处理和发送给后台php方法。里面有具体处理数据的样式以及php处理js发送数据保存到数据库的小demo。
jquery.dragsort-0.5.2.js 为插件内容，需要依赖jquery，为了实现效果其中我增加了282-297行，其他不变。
其他文件顺序加载就好。
统一包下载地址：百度网盘
dragsort官网
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