ASP的函数详解-2
2008-02-23 09:28:36来源:互联网 阅读 ()
FUNCTION: 返回字符串的小写形式
SYNTAX: Lcase(string)
ARGUMENTS: string is any valid string expression.
EXAMPLE: <%
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).
SYNTAX: Left(string, length)
ARGUMENTS:
EXAMPLE: <%
strTest = "This is a test!"
response.write Left(strTest, 3)
%>
RESULT: Thi
Len()
FUNCTION: 返回字符串的长度.
SYNTAX: Len(string | varName)
ARGUMENTS:
EXAMPLE: <%
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: <%
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: <%
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: <%=Minute(#12:45:32 PM#)%>
RESULT: 45
Month()
FUNCTION: 返回日期.
SYNTAX: Month(date)
ARGUMENTS: date is any valid date expression.
EXAMPLE: <%=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: <%=MonthName(Month(#08/04/99#))%>
RESULT: August
Now()
FUNCTION: Returns the current system date and time.
SYNTAX: Now()
ARGUMENTS: None
EXAMPLE: <%=Now%>
RESULT: 8/4/99 9:30:16 AM
Replace()
FUNCTION: Returns a string in which a specified sub-string has been replaced with another substring a specified number of times.
SYNTAX: Replace(strToBeSearched, strSearchFor, strReplaceWith [, start [, count [, compare>>>)
ARGUMENTS: strToBeSearched is a string expression containing a sub-string to be replaced; strSearchFor is the string expression to search for within strToBeSearched; strReplaceWith is the string expression to replace sub-string strSearchFor; start (optional) is the numeric character position to begin search; count (optional) is a value indicating the comparision constant.
EXAMPLE: <%
strTest = "This is an apple!"
response.write Replace(strTest, "apple", "orange")
%>
RESULT: This is an orange!
Right()
FUNCTION: 返回字符串右边第length个字符以前的字符(含第length个字符).
SYNTAX: Right(string, length)
ARGUMENTS: .
EXAMPLE: <%
strTest = "This is an test!"
response.write Right(strTest, 3)
%>
RESULT: st!
Rnd()
FUNCTION: 产生一个随机数.
SYNTAX: Rnd [ (number) >
ARGUMENTS:
EXAMPLE: <%
Randomize()
response.write RND()
%>
RESULT: 任何一个在0 到 1 之间的数
Round()
FUNCTION: 返回按指定位数进行四舍五入的数值.
SYNTAX: Round(expression [, numRight>)
ARGUMENTS: numRight数字表明小数点右边有多少位进行四舍五入。如果省略,则 Round 函数返回整数.
EXAMPLE: <%
i = 32.45678
response.write Round(i)
%>
RESULT: 32
Rtrim()
FUNCTION: 去掉字符串右边的字符串.
SYNTAX: Rtrim(string)
ARGUMENTS:
EXAMPLE: <%
strTest = "This is a test!! "
response.write RTrim(strTest)
%>
RESULT: This is a test!!
Second()
FUNCTION: 返回秒.
SYNTAX: Second(time)
ARGUMENTS: .
EXAMPLE: <%=Second(#12:34:28 PM#)%>
RESULT: 28
StrReverse()
FUNCTION: 反排一字符串
SYNTAX: StrReverse(string)
ARGUMENTS:
EXAMPLE: <%
strTest = "This is a test!!"
response.write StrReverse(strTest)
%>
RESULT: !!tset a si sihT
Time()
FUNCTION: 返回系统时间.
SYNTAX: Time()
ARGUMENTS: .
EXAMPLE: <%=Time%>
RESULT: 9:58:28 AM
Trim()
FUNCTION: 去掉字符串左右的空格.
SYNTAX: Trim(string)
ARGUMENTS: string is any valid string expression.
EXAMPLE: <%
strTest = " This is a test!! "
response.write Trim(strTest)
%>
RESULT: This is a test!!
UBound()
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