函数|函数21. IsObject()
  FUNCTION: Returns a boolean value indicating whether an expression refers to an automation object.
  SYNTAX: IsObject(expression)
  ARGUMENTS: expression is any valid expression.
  EXAMPLE: <%
Set con = Server.CreateObject("ADODB.Connection")
response.write IsObject(con)
%>
  RESULT: True
-------------------------------------
  
22. LBound()
  FUNCTION: Returns the base index value for a dimension of any array.
  SYNTAX: Lbound(arrayname [, dimension])
  ARGUMENTS: arrayname is the name of any array; dimension is an optional number indicating the dimension
to find the lower bound.
  EXAMPLE: <%
i = Array("Monday","Tuesday","Wednesday")
response.write LBound(i)
%>
  RESULT: 0
-------------------------------------
  
23. LCase()
  FUNCTION: Returns a string that has been converted into lowercase characters.
  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!
-------------------------------------
  
24. Left()
  FUNCTION: Returns the number of characters from the left side of a string.
  SYNTAX: Left(string, length)
  ARGUMENTS: string is any valid string expression; length is the length of characters to return.
  EXAMPLE: <%
strTest = "This is a test!"
response.write Left(strTest, 3)
%>
  RESULT: Thi
-------------------------------------
  
25. Len()
  FUNCTION: Returns the number of characters in a string or the number of bytes required to store a
variable.
  SYNTAX: Len(string | varName)
  ARGUMENTS: string is any valid string expression; varName is any valid variable name.
  EXAMPLE: <%
strTest = "This is a test!"
response.write Len(strTest)
%>
  RESULT: 15
(The total length of strTest is 15 characters)
26.  
LTrim()
  FUNCTION: Returns a string without leading spaces.
  SYNTAX: LTrim(string)
  ARGUMENTS: string is any valid string expression.
  EXAMPLE: <%
strTest = " This is a test!"
response.write LTrim(strTest)
%>
  RESULT: This is a test!
-------------------------------------
  
27. Mid()
  FUNCTION: Returns a specified number of characters from a string.
  SYNTAX: Mid(string, start [, length])
  ARGUMENTS: string is any valid string expression; start is a numeric character position to begin
extraction from; length (optional) is the number of characters to return.
  EXAMPLE: <%
strTest = "This is a test! Today is Monday."
response.write Mid(strTest, 17, 5)
%>
  RESULT: Today
-------------------------------------
  
28. Minute()
  FUNCTION: Returns the number of the minutes in current system time.
  SYNTAX: Minute(time)
  ARGUMENTS: time is any valid time expression.
  EXAMPLE: <%=Minute(#12:45:32 PM#)%>
  RESULT: 45
-------------------------------------
  
29. Month()
  FUNCTION: Returns the number of the month of the year.
  SYNTAX: Month(date)
  ARGUMENTS: date is any valid date expression.
  EXAMPLE: <%=Month(#08/04/99#)%>
  RESULT: 8
-------------------------------------
  
30. 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
-------------------------------------
  
31. Now()
  FUNCTION: Returns the current system date and time.
  SYNTAX: Now()
  ARGUMENTS: None
  EXAMPLE: <%=Now%>
  RESULT: 8/4/99 9:30:16 AM
-------------------------------------
  
32. 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, st