ASP function
The ASP function is similar to VBScript, and there are some common functions.
Array ()
Function returns an array
Expression array (list)
Allow data types: characters, numbers
Example: <%
DIM myArray ()
For i = 1 to 7
Redim Preserve MyArray (i)
MyArray (i) = weekdayName (i)
NEXT
%>
Return Result: Create a array of 7 elements with MyArray
MyArray ("Sunday", "Monday", ... "SATURDAY")
Cint ()
The function converts an expression into a digital type
Expression CINT (EXPRESSION)
Allow data types: any valid characters
Example: <%
f = "234"
Response.write cint (f) 2
%>
Return Result: 236
The conversion character "234" is a number "234", and if the string is empty, return 0 value
CreateObject ()
The function establishes and returns an instance of a registered ActiveX component.
Expression CreateObject (ObjName)
Allow data types: ObjName is the name of any valid, registered ActiveX component.
Example: <%
Set con = Server.createObject ("AdoDb.Connection")
%>
CSTR ()
A function transforms an expression as a string.
Expression CSTR (Expression)
Allow data types: Expression is any valid expression.
Example: <%
S = 3 2
Response.write "THE Return Results IS:" & CSTR (s)
%>
Return Result: Transforming Number "5" is character "5".
Date ()
The function returns the current system date.
Expression Date ()
Allow data types: None.
Example: <% = DATE%>
Return Results: 9/9/00
Dateadd ()
The function returns a changed date.
Expression Dateadd (TimeInterval, Number, Date)
Allow data types:
TimeInterval is the Time Interval to Add;
Number IS Amount of Time Interval To Add;
And Date Is The Starting Date.
Example: <%
Currentdate = # 9/9/00 #
NewDate = dateadd ("m", 3, currentdate)
Response.write newdate
%>
<%
Currentdate = # 12: 34: 45 PM #
NewDate = dateadd ("h", 3, currentdate)
Response.write newdate
%>
Return Results: 9/9/00
3:34:45 PM
"m" = "month";
"d" = "day";
IF currentdate is in time format the,
"h" = "hour";
"s" = "second";
Datediff ()
The function returns the difference between the two dates.
Expression Datediff (TimeInterval, Date1, Date2 [, Firstday FirstDayofweek [, Firstweekofyear]]) Allow data type: TimeInterval indicates the type of time separation, such as "M" means "month".
Example: <%
FromDate = # 9/9/00 #
TODATE = # 1/1/2000 #
Response.write "There Are" & _
Datediff ("D", FromDate, Todate & _
Days to Millenium from 9/9/00. "
%>
Returns: 150 days from 9/9/00 to 2000.
Day ()
The function returns a month of the day.
Expression Day (date)
Allow data types: Date is any valid date.
Example: <% = DAY (# 9/9/00 #)%>
Return Result: 4
Formatcurrency ()
Function returns an expression, this expression has been formatted as a currency value
Expression Formatcurrency (Expression [, DIGIT [, LeadingDigit [, Paren [, GroupDigit]]]])
Allow data types: DIGIT indicates the value of the number of digits on the right side of the decimal point. The default value is -1, indicating the area setting of the computer; the LeadingDigit tri-state constant indicates whether the zero in front of the small numerical point is displayed.
Example: <% = Formatcurrency (34.3456)%>
Return Results: $ 34.35
Formatdatetime ()
The function returns the expression. This expression has been formatted as a date or time.
Expression Formator (Date, [, NamedFormat])
Allow data types: NamedFormat indicates the value of the date / time format used, if omitted, use VBGeneLDate.
Example: <% = formatdatetime ("09/9/00", vblongdate)%>
Return Results: Sunday, September 09, 2000
FormatNumber ()
The function returns an expression that is formatted to a value.
Expression FormatNumber (Expression [, DIGIT [, LeadingDigit [, Paren [, GroupDigit]]])
Allow data types: DIGIT indicates the value of the number of digits on the right side of the decimal point. The default is -1, indicating the area setting of the computer. LeadingDigit i indicates the value of the display bits on the right side of the decimal point. The default is -1, indicating the area setting of the computer. PAREN indicates the value of the number of digits on the right side of the decimal point. The default is -1, indicating the area setting of the computer. GroupDigit i indicates the value of the number of digits on the right side of the decimal point. The default is -1, indicating the area setting of the computer. .
Example: <% = FormatNumber (45.324567, 3)%>
Return Results: 45.325
Formatpercent ()
The function returns the expression that is formatted to have a percentage of the percentage of the tail (multiplying 100). (%)
Expression Formatpercent (Expression [, DIGIT [, LeadingDigit [, Paren [, GroupDigit]]]])
Allow data types: Ib.
Example: <% = Formatpercent (0.45267, 3)%>
Return Result: 45.267%
Hour ()
The function returns a small number of hours at 24. Expressions HOUR (TIME)
Allow data types:
Example: <% = Hour (# 4: 45: 34 pm #)%>
Return Result: 16
(HOUR HAS BEEN CONVERTED to 24-HOUR SYSTEM)
INSTR ()
The function returns the character or string where the first appearance in another string.
Expression INSTR ([START,] STRTOBESEARCHED, STRSEARCHFOR [, Compare])
Allow data types: start for the starting value of the search, STRTOBESEARCHED accepts the search for string strSearchFor to search the character. Compare comparison method (detailed view ASP constant)
Example: <%
strText = "this is a test !!"
POS = INSTR (strText, "a")
Response.write POS
%>
Return Result: 9
INSTRREV ()
The function is the same, just from the last search of the string
Expression INSTRREV ([Start,] Strtobesearched, StrsearchFor [, Compare])
Allow data types: Ib.
Example: <%
strText = "this is a test !!"
POS = INSTRREV (Strtext, "S")
Response.write POS
%>
Return Result: 13
Int ()
The function returns a numeric type and does not go all over.
Expression INT (Number)
Allow data types:
Example: <% = INT (32.89)%>
Return Result: 32
Isarray ()
The function determines whether an object is an array and returns the Boolean value.
Expression Isarray (Name)
Example: <%
strTest = "Test!"
Response.write isarray (StRTEST)
%>
Return Result: False
Isdate ()
The function judges whether or not the object is the date, return to Boolean
Expression isdate (Expression)
Example: <%
strTest = "9/4/2000"
Response.write isdate (StRTEST)
%>
Return Result: True
ISempty ()
The function determines whether an object is initialized and returns the Boolean value.
Expression ISEMPTY (EXPRESSION)
Example: <%
DIM I
Response.Write ISempty (i)
%>
Return Result: True
Isnull ()
The function determines whether an object is empty and returns the Boolean value.
Expression ISNULL (EXPRESSION)
Example: <%
DIM I
Response.write isnull (i)
%>
Return Result: False
Isnumeric ()
The function determines whether an object is a number and returns the Boolean value.
Expression ISNUMERIC (EXPRESSION)
Example: <%
i = "345"
Response.write isnumeric (i)
%>
Return Result: True
Even if the number adds quotation marks, ASP still thinks it is a number.
IsObject ()
The function determines whether an object is an object and returns the Boolean value.
Expression ISOBJECT (EXPRESSION)
Example: <%
Set con = Server.createObject ("AdoDb.Connection") Response.write isobject (con)
%>
Return Result: True
Lbound ()
The function returns the minimum subscript of the specified array dimension.
Expression LBound (ArrayName [, Dimension])
Example: <%
i = array ("Monday", "Tuesday", "Wednesday")
Response.write lbound (i)
%>
Return Result: 0
Lcase ()
Function Returns the lowercase form of the string
Expression LCASE (String)
Example: <%
strTrtest = "this is a test!"
Response.write Lcase (StRTEST)
%>
Return Result: this is a test!
Left ()
The function returns a character (including Changth characters) previously character (including Changth characters) on the left side of the string.
Expression Left (String, Length)
Example: <%
strTrtest = "this is a test!"
Response.write Left (strTest, 3)
%>
Return Result: THI
Len ()
The function returns the length of the string.
Expression Len (String | VarName)
Example: <%
strTrtest = "this is a test!"
Response.write len (strTest)
%>
Return results: 15
Ltrim ()
The function removes the space left on the string.
Expression Ltrim (String)
Example: <%
strTrtest = "this is a test!"
Response.write Ltrim (StRTEST)
%>
Return Result: this is a test!
MID ()
The function returns a string of specific lengths (starting from START, length length).
Expression MID (String, Start [, Length])
Example: <%
Strtest = "this is a test! Today is monday."
Response.write Mid (Strtest, 17, 5)
%>
Return Result: Today
Minute ()
The function returns time for time.
Expression Minute (TIME)
Example: <% = minute (# 12: 45: 32 pm #)%>
Return Result: 45
Month ()
Function returns the date.
Expression Month (Date)
Example: <% = MONTH (# 08/04/99 #)%>
Return Result: 8
Monthname ()
Function returns the specified month
Expression MONTHNAME (Month, [, ABB])
Example: <% = monthname (MONTH (# 08/04/99 #))%>
Return Result: August
Now ()
Function returns system time
Expression now ()
Example: <% = no%>
Return Results: 9/9/00 9:30:16 AM
Right ()
The function returns the character (including Changth characters) before the string of the first side character (including Changth characters).
Expression Right (String, Length)
Example: <%
strTest = "this is an test!"
Response.write Right (strTest, 3)%>
Return Result: ST!
RND ()
The function produces a random number.
Expression RND [(NUMBER)]
Example: <%
Randomize ()
RND ()
The function produces a random number.
Expression RND [(NUMBER)]
Example: <%
Randomize ()
Response.write rnd ()
%>
Return Result: Number of any one between 0 and 1
Round ()
The function returns the value of the pointing number to the number of points.
Expression Round (Expression [, nuMright])
Example: <%
i = 32.45678
Response.write Round (i)
%>
Return Result: 32
RTRIM ()
The function removes the string on the right side of the string.
Expression RTRIM (String)
Example: <%
strTest = "this is a test !!"
Response.write Rtrim (StRTEST)
%>
Return Result: this is a test !!
Split ()
The function segments a string and returns the segmentation result
Expression split (s [, d])
Example: <% v = split (a, b, c)
For i = 0 to Ubound (V)
Response.write v (i)
NEXT
%>
Return Result: A B C
SECOND ()
The function returns second.
Expression SECOND (TIME)
Example: <% = second (# 12: 34: 28 pm #)%>
Return Result: 28
Strreverse ()
Function refrigerated string
Expression Strreverse (String)
Example: <%
strTest = "this is a test !!"
Response.Write Strreverse (StRTEST)
%>
Return Result: !! Tset A SI SIHT
Time ()
The function returns to the system time.
Expression TIME ()
Example: <% = Time%>
Return Results: 9:58:28 AM
Trim ()
The function removes the space around the string.
Expression TRIM (String)
Example: <%
strTest = "this is a test !!"
Response.write Trim (StRTEST)
%>
Return Result: this is a test !!
Ubound ()
The function returns the maximum available subscript of the specified array dimension.
Expression Ubound (ArrayName [, Dimension])
Example: <%
i = array ("Monday", "Tuesday", "Wednesday")
Response.write ubound (i)
%>
Return Result: 2
Ucase ()
The function returns the uppercase of the string.
Expression ucase (String)
Allow data types:
Example: <%
strTest = "this is a test !!"
Response.write ucase (StRTEST)
%>
Return Result: this is a test !!
VARTYPE ()
Function Returns the value indicating the variable quantum type
Expression Vartype (VarName)
Example: <%
i = 3
Response.write Vartype (i)
%>
Return Result: 2 (Digital) See "ASP constant" weekday ()
The function returns in the first few days of the week.
Expression Weekday (Date [, Firstdayofweek])
Example: <%
D = # 9/9/00 #
Response.write weekday (d)
%>
Return Result: 4 (Wednesday)
WeekdayName ()
The function returns the name of the first few days.
Expression weekdayName (weekday [, abb [, firstdayofweek]])
Example: <%
D = # 9/9/00 #
Response.write weekdayname (Weekday (D))
%>
Return Result: Wednesday
Year ()
The function returns the current year.
Expression Year (Date)
Example: <% = year (# 9/9/00 #)%>
Return Results: 1999
