ASP函数

Array()
	FUNCTION:	返回一个数组
	SYNTAX:	Array(list)
	ARGUMENTS:	字符，数字均可
	EXAMPLE:	<% Dim myArray() For i = 1 to 7    Redim Preserve myArray(i)    myArray(i) = WeekdayName(i) Next %>
	RESULT:	建立了一个包含7个元素的数组myArray myArray("Sunday","Monday", ... ... "Saturday")
	CInt()
	FUNCTION:	将一个表达式转化为数字类型
	SYNTAX:	CInt(expression)
	ARGUMENTS:	任何有效的字符均可
	EXAMPLE:	<% f = "234" response.write cINT(f) + 2 %>
	RESULT:	236 转化字符"234"为数字"234"，如果字符串为空，则返回0值
	CreateObject()
	FUNCTION:	建立和返回一个已注册的ACTIVEX组件的实例。
	SYNTAX:	CreateObject(objName)
	ARGUMENTS:	objName 是任何一个有效、已注册的ACTIVEX组件的名字.
	EXAMPLE:	<% Set con = Server.CreateObject("ADODB.Connection") %>
	RESULT:
	CStr()
	FUNCTION:	转化一个表达式为字符串.
	SYNTAX:	CStr(expression)
	ARGUMENTS:	expression 是任何有效的表达式。
	EXAMPLE:	<% s = 3 + 2 response.write "The result is: " & cStr(s) %>
	RESULT:	转化数字“5”为字符“5”。
	Date()
	FUNCTION:	返回当前系统日期.
	SYNTAX:	Date()
	ARGUMENTS:	None.
	EXAMPLE:	<%=Date%>
	RESULT:	8/4/99
	DateAdd()
	FUNCTION:	返回一个被改变了的日期。
	SYNTAX:	DateAdd(timeinterval,number,date)
	ARGUMENTS:	timeinterval is the time interval to add; number is amount of time intervals to add; and date is the starting date.
	EXAMPLE:	<% currentDate = #8/4/99# newDate = DateAdd("m",3,currentDate) response.write newDate %> <% currentDate = #12:34:45 PM# newDate = DateAdd("h",3,currentDate) response.write newDate %>
	RESULT:	11/4/99 3:34:45 PM "m" = "month"; "d" = "day"; If currentDate is in time format then, "h" = "hour"; "s" = "second";
	DateDiff()
	FUNCTION:	返回两个日期之间的差值 。
	SYNTAX:	DateDiff(timeinterval,date1,date2 [, firstdayofweek [, firstweekofyear]])
	ARGUMENTS:	timeinterval 表示相隔时间的类型，如“M“表示“月”。
	EXAMPLE:	<% fromDate = #8/4/99# toDate = #1/1/2000# response.write "There are " & _    DateDiff("d",fromDate,toDate) & _    " days to millenium from 8/4/99." %>
	RESULT:	从8/4/99 到2000年还有 150 天.
	Day()
	FUNCTION:	返回一个月的第几日  .
	SYNTAX:	Day(date)
	ARGUMENTS:	date 是任何有效的日期。
	EXAMPLE:	<%=Day(#8/4/99#)%>
	RESULT:	4
	FormatCurrency()
	FUNCTION:	返回表达式，此表达式已被格式化为货币值
	SYNTAX:	FormatCurrency(Expression [, Digit [, LeadingDigit [, Paren [, GroupDigit]]]])
	ARGUMENTS:	Digit 指示小数点右侧显示位数的数值。默认值为 -1，指示使用的是计算机的区域设置; LeadingDigit 三态常数，指示是否显示小数值小数点前面的零。
	EXAMPLE:	<%=FormatCurrency(34.3456)%>
	RESULT:	$34.35
	FormatDateTime()
	FUNCTION:	返回表达式，此表达式已被格式化为日期或时间
	SYNTAX:	FormatDateTime(Date, [, NamedFormat])
	ARGUMENTS:	NamedFormat 指示所使用的日期/时间格式的数值，如果省略，则使用 vbGeneralDate.
	EXAMPLE:	<%=FormatDateTime("08/4/99", vbLongDate)%>
	RESULT:	Wednesday, August 04, 1999
	FormatNumber()
	FUNCTION:	返回表达式，此表达式已被格式化为数值.
	SYNTAX:	FormatNumber(Expression [, Digit [, LeadingDigit [, Paren [, GroupDigit]]]])
	ARGUMENTS:	Digit 指示小数点右侧显示位数的数值。默认值为 -1，指示使用的是计算机的区域设置。; LeadingDigit i指示小数点右侧显示位数的数值。默认值为 -1，指示使用的是计算机的区域设置。; Paren 指示小数点右侧显示位数的数值。默认值为 -1，指示使用的是计算机的区域设置。; GroupDigit i指示小数点右侧显示位数的数值。默认值为 -1，指示使用的是计算机的区域设置。.
	EXAMPLE:	<%=FormatNumber(45.324567, 3)%>
	RESULT:	45.325
	FormatPercent()
	FUNCTION:	返回表达式，此表达式已被格式化为尾随有 % 符号的百分比（乘以 100 ）。 (%)
	SYNTAX:	FormatPercent(Expression [, Digit [, LeadingDigit [, Paren [, GroupDigit]]]])
	ARGUMENTS:	同上.
	EXAMPLE:	<%=FormatPercent(0.45267, 3)%>
	RESULT:	45.267%
	Hour()
	FUNCTION:	以24时返回小时数.
	SYNTAX:	Hour(time)
	ARGUMENTS:
	EXAMPLE:	<%=Hour(#4:45:34 PM#)%>
	RESULT:	16 (Hour has been converted to 24-hour system)
	Instr()
	FUNCTION:	返回字符或字符串在另一个字符串中第一次出现的位置.
	SYNTAX:	Instr([start, ] strToBeSearched, strSearchFor [, compare])
	ARGUMENTS:	Start为搜索的起始值，strToBeSearched接受搜索的字符串  strSearchFor要搜索的字符.compare比较方式（详细见ASP常数）
	EXAMPLE:	<% strText = "This is a test!!" pos = Instr(strText, "a") response.write pos %>
	RESULT:	9
	InstrRev()
	FUNCTION:	同上，只是从字符串的最后一个搜索起
	SYNTAX:	InstrRev([start, ] strToBeSearched, strSearchFor [, compare])
	ARGUMENTS:	同上.
	EXAMPLE:	<% strText = "This is a test!!" pos = InstrRev(strText, "s") response.write pos %>
	RESULT:	13
	Int()
	FUNCTION:	返回数值类型,不四舍五入。
	SYNTAX:	Int(number)
	ARGUMENTS:
	EXAMPLE:	<%=INT(32.89)%>
	RESULT:	32
	IsArray()
	FUNCTION:	判断一对象是否为数组，返回布尔值  .
	SYNTAX:	IsArray(name)
	ARGUMENTS:
	EXAMPLE:	<% strTest = "Test!" response.write IsArray(strTest) %>
	RESULT:	False
	IsDate()
	FUNCTION:	判断一对象是否为日期，返回布尔值
	SYNTAX:	IsDate(expression)
	ARGUMENTS:	expression is any valid expression.
	EXAMPLE:	<% strTest = "8/4/99" response.write IsDate(strTest) %>
	RESULT:	True
	IsEmpty()
	FUNCTION:	判断一对象是否初始化，返回布尔值.
	SYNTAX:	IsEmpty(expression)
	ARGUMENTS:
	EXAMPLE:	<% Dim i response.write IsEmpty(i) %>
	RESULT:	True
	IsNull()
	FUNCTION:	判断一对象是否为空，返回布尔值.
	SYNTAX:	IsNull(expression)
	ARGUMENTS:
	EXAMPLE:	<% Dim i response.write IsNull(i) %>
	RESULT:	False
	IsNumeric()
	FUNCTION:	判断一对象是否为数字，返回布尔值.
	SYNTAX:	IsNumeric(expression)
	ARGUMENTS:
	EXAMPLE:	<% 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:	<% 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:	<% 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