摘要：var s = "1 5 2 4 5";var reg = /(\d)(.)(?=.*\1)/;alert(reg.test(s)); 阅读全文

摘要：onchange事件的触发条件需满足：1、输入框的值发生改变；2、输入框失去焦点。事件触发发生在2，而不是1的过程中。如果值改变则触发事件则需要使用onpropertychange(IE)或oninput(FF) 阅读全文

摘要：@echo offecho (1).家庭网络 echo (2).办公网络 echo (3).退出 set /p x= 选择你要设置的网络: if %x%==1 goto a if %x%==2 goto b if %x%==3 goto c :a netsh interface ip set address "本地连接" static 192.168.0.254 255.255.255.0 192.168.0.1 1 netsh interface ip set dns "本地连接" static 8.8.8.8 netsh interface ip a 阅读全文

摘要：select * from sys.extended_properties where major_id in (select id from sysobjects where name = 't_lotteryTogether' )查看表注释信息sp_mshelpcolumns 'dbo.t_websiteNotice'查看列信息sELECT syscolumns.name,systypes.name,syscolumns.isnullable, syscolumns.length FROM syscolumns, systypes WHERE syscolu 阅读全文