日期:2009-10-19 浏览次数:20915 次
FUNCTION: 判断一对象是否为空,返回布尔值.
SYNTAX: IsNull(expression)
IsNumeric()
FUNCTION: 判断一对象是否为数字,返回布尔值.
SYNTAX: IsNumeric(expression)
ARGUMENTS:
EXAMPLE: $#@60;%
i = "345"
response.write IsNumeric(i)
%>
RESULT: True 就算数字加了引号,ASP还是认为它是数字。
IsObject()
FUNCTION: 判断一对象是否为对象,返回布尔值.
SYNTAX: IsObject(expression)
ARGUMENTS:
EXAMPLE: $#@60;%
Set con = Server.CreateObject("ADODB.Connection")
response.write IsObject(con)
%>
RESULT: True
LBound()
FUNCTION: 返回指定数组维的最小可用下标.
SYNTAX: Lbound(arrayname [, dimension])
ARGUMENTS: ; dimension 指明要返回哪一维下界的整数。使用 1 表示第一维,2 表示第二维,以此类推。如果省略 dimension 参数,默认值为 1.
EXAMPLE: $#@60;%
i = Array("Monday","Tuesday","Wednesday")
response.write LBound(i)
%>
RESULT: 0
LCase()
FUNCTION: 返回字符串的小写形式
SYNTAX: Lcase(string)
ARGUMENTS: string is any valid string expression.
EXAMPLE: $#@60;%
strTest = "This is a test!"
response.write LCase(strTest)
%>
RESULT: this is a test!
Left()
< FUNCTION: 返回字符串左边第length个字符以前的字符(含第length个字符).Len()
FUNCTION: 返回字符串的长度.
SYNTAX: Len(string | varName)
ARGUMENTS:
EXAMPLE: $#@60;%
strTest = "This is a test!"
response.write Len(strTest)
%>
RESULT: 15
LTrim()
FUNCTION: 去掉字符串左边的空格.
SYNTAX: LTrim(string)
ARGUMENTS:
EXAMPLE: $#@60;%
strTest = " This is a test!"
response.write LTrim(strTest)
%>
RESULT: This is a test!
Mid()
FUNCTION: 返回特定长度的字符串(从start开始,长度为length).
SYNTAX: Mid(string, start [, length])
ARGUMENTS:
EXAMPLE: $#@60;%
strTest = "This is a test! Today is Monday."
response.write Mid(strTest, 17, 5)
%>
RESULT: Today
Minute()
FUNCTION: 返回时间的分钏.
SYNTAX: Minute(time)
ARGUMENTS:
EXAMPLE: $#@60;%=Minute(#12:45:32 PM#)%>
RESULT: 45
Month()
FUNCTION: 返回日期.
SYNTAX: Month(date)
ARGUMENTS: date is any valid date expression.
EXAMPLE: $#@60;%=Month(#08/04/99#)%>
RESULT: 8
MonthName()
FUNCTION: Returns a string identifying the specified month.
SYNTAX: MonthName(month, [, Abb])
ARGUMENTS: month is the numeric representation for a given month; Abb (optional) is a boolean value used to display month abbreviation. True will display the abbreviated month name and False (default) will not show the abbreviation.
EXAMPLE: $#@60;%=MonthName(Month(#08/04/99#))%>
RESULT: August
Now()
FUNCTION: Returns the current system date and time.
SYNTAX: Now()
ARGUM