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asp 常用函數(shù)用法

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2011年2月16日 9:23 本文熱度 2654
Array()
   FUNCTION: 返回一個數(shù)組
   SYNTAX: Array(list)
   ARGUMENTS: 字符,數(shù)字均可
   EXAMPLE: <%
   Dim myArray()
   For i = 1 to 7
   Redim Preserve myArray(i)
   myArray(i) = WeekdayName(i)
   Next
   %>
   RESULT: 建立了一個包含7個元素的數(shù)組myArray
   myArray("Sunday","Monday", ... ... "Saturday")
CInt()
   FUNCTION: 將一個表達(dá)式轉(zhuǎn)化為數(shù)字類型
   SYNTAX: CInt(expression)
   ARGUMENTS: 任何有效的字符均可
   EXAMPLE: <%
   f = "234"
   response.write cINT(f) + 2
   %>
   RESULT: 236
   轉(zhuǎn)化字符"234"為數(shù)字"234",如果字符串為空,則返回0值
CreateObject()
   FUNCTION: 建立和返回一個已注冊的ACTIVEX組件的實例。
   SYNTAX: CreateObject(objName)
   ARGUMENTS: objName 是任何一個有效、已注冊的ACTIVEX組件的名字.
   EXAMPLE: <%
   Set con = Server.CreateObject("ADODB.Connection")
   %>
   RESULT:
CStr()
   FUNCTION: 轉(zhuǎn)化一個表達(dá)式為字符串.
   SYNTAX: CStr(expression)
   ARGUMENTS: expression 是任何有效的表達(dá)式。
   EXAMPLE: <%
   s = 3 + 2
   response.write "The result is: " & cStr(s)
   %>
   RESULT: 轉(zhuǎn)化數(shù)字“5”為字符“5”。
Date()
   FUNCTION: 返回當(dāng)前系統(tǒng)日期.
   SYNTAX: Date()
   ARGUMENTS: None.
   EXAMPLE: <%=Date%>
   RESULT: 8/4/99
DateAdd()
   FUNCTION: 返回一個被改變了的日期。
   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: 返回兩個日期之間的差值 。
   SYNTAX: DateDiff(timeinterval,date1,date2 [, firstdayofweek [, firstweekofyear>>)
   ARGUMENTS: timeinterval 表示相隔時間的類型,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: 從8/4/99 到2000年還有 150 天.
Day()
   FUNCTION: 返回一個月的第幾日 .
   SYNTAX: Day(date)
   ARGUMENTS: date 是任何有效的日期。
   EXAMPLE: <%=Day(#8/4/99#)%>
   RESULT: 4
FormatCurrency()
   FUNCTION: 返回表達(dá)式,此表達(dá)式已被格式化為貨幣值
   SYNTAX: FormatCurrency(Expression [, Digit [, LeadingDigit [, Paren [, GroupDigit>>>>)
   ARGUMENTS: Digit 指示小數(shù)點右側(cè)顯示位數(shù)的數(shù)值。默認(rèn)值為 -1,指示使用的是計算機(jī)的區(qū)域設(shè)置;   
LeadingDigit 三態(tài)常數(shù),指示是否顯示小數(shù)值小數(shù)點前面的零。
   EXAMPLE: <%=FormatCurrency(34.3456)%>
   RESULT: $34.35
FormatDateTime()
   FUNCTION: 返回表達(dá)式,此表達(dá)式已被格式化為日期或時間
   SYNTAX: FormatDateTime(Date, [, NamedFormat>)
   ARGUMENTS: NamedFormat 指示所使用的日期/時間格式的數(shù)值,如果省略,則使用 vbGeneralDate.
   EXAMPLE: <%=FormatDateTime("08/4/99", vbLongDate)%>
   RESULT: Wednesday, August 04, 1999
FormatNumber()
   FUNCTION: 返回表達(dá)式,此表達(dá)式已被格式化為數(shù)值.
   SYNTAX: FormatNumber(Expression [, Digit [, LeadingDigit [, Paren [, GroupDigit>>>>)
   ARGUMENTS: Digit 指示小數(shù)點右側(cè)顯示位數(shù)的數(shù)值。默認(rèn)值為 -1,指示使用的是計算機(jī)的區(qū)域設(shè)置。; LeadingDigit
i指示小數(shù)點右側(cè)顯示位數(shù)的數(shù)值。默認(rèn)值為 -1,指示使用的是計算機(jī)的區(qū)域設(shè)置。; Paren 指示小數(shù)點右側(cè)顯示位數(shù)的數(shù)值。
默認(rèn)值為 -1,指示使用的是計算機(jī)的區(qū)域設(shè)置。; GroupDigit i指示小數(shù)點右側(cè)顯示位數(shù)的數(shù)值。默認(rèn)值為 -1,指示使用的是
計算機(jī)的區(qū)域設(shè)置。.
   EXAMPLE: <%=FormatNumber(45.324567, 3)%>
   RESULT: 45.325
FormatPercent()
   FUNCTION: 返回表達(dá)式,此表達(dá)式已被格式化為尾隨有 % 符號的百分比(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時返回小時數(shù).
   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個字符串中第一次出現(xiàn)的位置.
   SYNTAX: Instr([start, > strToBeSearched, strSearchFor [, compare>)
   ARGUMENTS: Start為搜索的起始值,strToBeSearched接受搜索的字符串 strSearchFor要搜索的字符compare 比較方式
(詳細(xì)見ASP常數(shù))
   EXAMPLE: <%
   strText = "This is a test!!"
   pos = Instr(strText, "a")
   response.write pos
   %>
   RESULT: 9
InstrRev()
   FUNCTION: 同上,只是從字符串的最后一個搜索起
   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: 返回數(shù)值類型,不四舍五入。
   SYNTAX: Int(number)
   ARGUMENTS:
   EXAMPLE: <%=INT(32.89)%>
   RESULT: 32
IsArray()
   FUNCTION: 判斷一對象是否為數(shù)組,返回布爾值 .
   SYNTAX: IsArray(name)
   ARGUMENTS:
   EXAMPLE: <%
   strTest = "Test!"
   response.write IsArray(strTest)
   %>
   RESULT: False
IsDate()
   FUNCTION: 判斷一對象是否為日期,返回布爾值
   SYNTAX: IsDate(expression)
   ARGUMENTS: expression is any valid expression.
   EXAMPLE: <%
   strTest = "8/4/99"
   response.write IsDate(strTest)
   %>
   RESULT: True
IsEmpty()
   FUNCTION: 判斷一對象是否初始化,返回布爾值.
   SYNTAX: IsEmpty(expression)
   ARGUMENTS:
   EXAMPLE: <%
   Dim i
   response.write IsEmpty(i)
   %>
   RESULT: True
IsNull()
   FUNCTION: 判斷一對象是否為空,返回布爾值.
   SYNTAX: IsNull(expression)
   ARGUMENTS:
   EXAMPLE: <%
   Dim i
   response.write IsNull(i)
   %>
   RESULT: False
IsNumeric()
   FUNCTION: 判斷一對象是否為數(shù)字,返回布爾值.
   SYNTAX: IsNumeric(expression)
   ARGUMENTS:
   EXAMPLE: <%
   i = "345"
   response.write IsNumeric(i)
   %>
   RESULT: True
   就算數(shù)字加了引號,ASP還是認(rèn)為它是數(shù)字。
IsObject()
   FUNCTION: 判斷一對象是否為對象,返回布爾值.
   SYNTAX: IsObject(expression)
   ARGUMENTS:
   EXAMPLE: <%
   Set con = Server.CreateObject("ADODB.Connection")
   response.write IsObject(con)
   %>
   RESULT: True

LBound()
   FUNCTION: 返回指定數(shù)組維的最小可用下標(biāo).
   SYNTAX: Lbound(arrayname [, dimension>)
   ARGUMENTS: dimension 指明要返回哪一維下界的整數(shù)。使用 1 表示第一維,2 表示第二維,以此類  推。如果省略
dimension 參數(shù),默認(rèn)值為 1.
   EXAMPLE: <%
   i = Array("Monday","Tuesday","Wednesday")
   response.write LBound(i)
   %>
   RESULT: 0
LCase()
   FUNCTION: 返回字符串的小寫形式
   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: 返回字符串左邊第length個字符以前的字符(含第length個字符).
   SYNTAX: Left(string, length)
   ARGUMENTS:
   EXAMPLE: <%
   strTest = "This is a test!"
   response.write Left(strTest, 3)
   %>
   RESULT: Thi
Len()
   FUNCTION: 返回字符串的長度.
   SYNTAX: Len(string | varName)
   ARGUMENTS:
   EXAMPLE: <%
   strTest = "This is a test!"
   response.write Len(strTest)
   %>
   RESULT: 15
LTrim()
   FUNCTION: 去掉字符串左邊的空格.
   SYNTAX: LTrim(string)
   ARGUMENTS:
   EXAMPLE: <%
   strTest = " This is a test!"
   response.write LTrim(strTest)
   %>
   RESULT: This is a test!
Mid()
   FUNCTION: 返回特定長度的字符串(從start開始,長度為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: 返回時間的分釧.
   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: 返回字符串右邊第length個字符以前的字符(含第length個字符).
   SYNTAX: Right(string, length)
   ARGUMENTS: .
   EXAMPLE: <%
   strTest = "This is an test!"
   response.write Right(strTest, 3)
   %>
   RESULT: st!
Rnd()
   FUNCTION: 產(chǎn)生一個隨機(jī)數(shù).
   SYNTAX: Rnd [ (number) >
   ARGUMENTS:
   EXAMPLE: <%
   Randomize()
   response.write RND()
   %>
   RESULT: 任何一個在0 到 1 之間的數(shù)
Round()
   FUNCTION: 返回按指定位數(shù)進(jìn)行四舍五入的數(shù)值.
   SYNTAX: Round(expression [, numRight>)
   ARGUMENTS: numRight數(shù)字表明小數(shù)點右邊有多少位進(jìn)行四舍五入。如果省略,則 Round 函數(shù)返回整數(shù).
   EXAMPLE: <%
   i = 32.45678
   response.write Round(i)
   %>
   RESULT: 32
Rtrim()
   FUNCTION: 去掉字符串右邊的字符串.
   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: 返回系統(tǒng)時間.
   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: 返回指定數(shù)組維數(shù)的最大可用下標(biāo).
   SYNTAX: Ubound(arrayname [, dimension>)
   ARGUMENTS: dimension (optional) 指定返回哪一維上界的整數(shù)。1 表示第一維,2 表示第二維,以此類推。如果省略
dimension 參數(shù),則默認(rèn)值為 1.
   EXAMPLE: <%
   i = Array("Monday","Tuesday","Wednesday")
   response.write UBound(i)
   %>
   RESULT: 2
UCase()
   FUNCTION: 返回字符串的大寫形式.
   SYNTAX: UCase(string)
   ARGUMENTS:
   EXAMPLE: <%
   strTest = "This is a test!!"
   response.write UCase(strTest)
   %>
   RESULT: THIS IS A TEST!!
VarType()
   FUNCTION: 返回指示變量子類型的值
   SYNTAX: VarType(varName)
   ARGUMENTS:
   EXAMPLE: <%
   i = 3
   response.write varType(i)
   %>
   RESULT: 2(數(shù)字)詳見"asp常數(shù)"
WeekDay()
   FUNCTION: 返回在一周的第幾天.
   SYNTAX: WeekDay(date [, firstdayofweek>)
   ARGUMENTS: .
   EXAMPLE: <%
   d = #8/4/99#
   response.write Weekday(d)
   %>
   RESULT: 4(星期三)
WeekDayName()
   FUNCTION: 返回一周第幾天的名字.
   SYNTAX: WeekDayName(weekday [, Abb [, firstdayofweek>>)
   ARGUMENTS: Abb可選。Boolean 值,指明是否縮寫表示星期各天的名稱。如果省略, 默認(rèn)值為 False,即不縮寫星期各
天的名稱.firstdayofweek指明星期第一天的數(shù)值
   EXAMPLE: <%
   d = #8/4/99#
   response.write WeekdayName(Weekday(d))
   %>
   RESULT: Wednesday
Year()
   FUNCTION: 返回當(dāng)前的年份.
   SYNTAX: Year(date)
   ARGUMENTS:
   EXAMPLE: <%=Year(#8/4/99#)%>
   RESULT: 1999

該文章在 2011/2/16 9:23:10 編輯過
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