3-22.htm

来自「包括本书所有的源代码。所有程序均在Windows 2000+IIS5.0+SQL」· HTM 代码 · 共 8 行

<Script Language="VBS">
	strUserName = "Jack"
	document.write(VarType(strUserName) & "<BR>")
	document.write (IsNull(Null) & "<BR>")
	a = Empty
	document.write (IsEmpty(a))
</Script>