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ASP的函数详解(2)

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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: <%
  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: <%
  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()
  FUNCTION: 返回指定数组维数的最大可用下标.
  SYNTAX: Ubound(arrayname [, dimension>)
  ARGUMENTS: dimension (optional) 指定返回哪一维上界的整数。1 表示第一维,2 表示第二维,以此类推。如果省略 dimension 参数,则默认值为 1.
  EXAMPLE: <%
  i = Array("Monday","Tuesday","Wednesday")
  response.write UBound(i)
  %>
  RESULT: 2

UCase()
  FUNCTION: 返回字符串的大写形式.
  SYNTAX: UCase(string)
  ARGUMENTS:
  EXAMPLE: <%
  strTest = "This is a test!!"
  response.write UCase(strTest)
  %>
  RESULT: THIS IS A TEST!!

VarType()
  FUNCTION: 返回指示变量子类型的值
  SYNTAX: VarType(varName)
  ARGUMENTS:
  EXAMPLE: <%
  i = 3
  response.write varType(i)
  %>
  RESULT: 2(数字)详见"asp常数"

WeekDay()
  FUNCTION: 返回在一周的第几天.
  SYNTAX: WeekDay(date [, firstdayofweek>)
  ARGUMENTS: .
  EXAMPLE: <%
  d = #8/4/99#
  response.write Weekday(d)
  %>
  RESULT: 4(星期三)

WeekDayName()
FUNCTION: 返回一周第几天的名字.
SYNTAX: WeekDayName(weekday [, Abb [, firstdayofweek>>)
ARGUMENTS: Abb可选。Boolean 值,指明是否缩写表示星期各天的名称。如果省略, 默认值为 False,即不缩写星期各天的名称.firstdayofweek指明星期第一天的数值
EXAMPLE: <%
d = #8/4/99#
response.write WeekdayName(Weekday(d))
%>
RESULT: Wednesday

Year()
  FUNCTION: 返回当前的年份.
  SYNTAX: Year(date)
  ARGUMENTS:
  EXAMPLE: <%=Year(#8/4/99#)%>
  RESULT: 1999
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