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博客园 - 古道飘零客

Easyui combogrid添加toolbar SQL导出到Excel 存储过程 [WPF]DataGrid行前景色根据单元格编辑值变色 [转]系统性能调优吐血总结分享 [转]C#读取CSV,Excel,Txt文件,删除文件,拷贝文件 [转]C# 文件操作 全收录 追加、拷贝、删除、移动文件、创建目录、递归删除文件夹及文件.... JS四舍五入BUG解决 IIRF(Ionics Isapi Rewrite Filt er)实现在IIS 5/6上重写Url Repeater控件实现左侧快捷菜单 - 古道飘零客 - 博客园 JS和CS互访(非常经典) [转]IList及泛型集合类转换DataTable - 古道飘零客 - 博客园 关于sqlserver2005中的bit数据类型 C#小写转大写 - 古道飘零客 - 博客园 URL、Session、Cookies、Server.Transfer、Application和跨页面传送详解 sql server 2005 安装提示COM+ 和性能监视器计数器要求错误 oracle数据分组排名次 [转cnblogs]网页静态 怎样读取本地Excel数据,并保存到时服务器 - 古道飘零客 - 博客园 C#项目打包,并自动安装SQL数据库 - 古道飘零客 - 博客园
js如何判断小数点后有几位? - 古道飘零客 - 博客园
古道飘零客 · 2009-03-04 · via 博客园 - 古道飘零客

Posted on 2009-03-04 14:23  古道飘零客  阅读(1054)  评论(0)    收藏  举报

<script>  
  var   n=3.14  
  if(n.toString().split(".")[1].length>3)alert("大于3")  
  else   alert(n.toFixed(3))  
  </script>