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
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