ASP中的函数应用方法及应用举例(二)

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
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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
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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: <%