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[/IMG][/IMG][/IMG][/IMG])
ARGUMENTS: 同上.
EXAMPLE: <%=FormatPercent(0.45267, 3)%[/IMG]
RESULT: 45.267%
Hour()
FUNCTION: 以24时返回小时数.
SYNTAX: Hour(time)
ARGUMENTS:
EXAMPLE: <%=Hour(#4:45:34 PM#)%[/IMG]
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, [/IMG] strToBeSearched, strSearchFor [, compare[/IMG])
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
%[/IMG]
RESULT: 9
InstrRev()
FUNCTION: 同上，只是从字符串的最后一个搜索起
SYNTAX: InstrRev([start, [/IMG] strToBeSearched, strSearchFor [, compare[/IMG])
ARGUMENTS: 同上.
EXAMPLE: <%
strText = "This is a test!!"
pos = InstrRev(strText, "s")
response.write pos
%[/IMG]
RESULT: 13
Int()
FUNCTION: 返回数值类型,不四舍五入。
SYNTAX: Int(number)
ARGUMENTS:
EXAMPLE: <%=INT(32.89)%[/IMG]
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)
%[/IMG]
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)
%[/IMG]
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)
%[/IMG]
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)
%[/IMG]
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)
%[/IMG]
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)
%[/IMG]
RESULT: True
LBound()
FUNCTION: 返回指定数组维的最小可用下标.
SYNTAX: Lbound(arrayname [, dimension[/IMG])
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)
%[/IMG]
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)
%[/IMG]
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)
%[/IMG]
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)
%[/IMG]
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)
%[/IMG]
RESULT: This is a test!
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