ASP实用函数库(6)

王朝asp·作者佚名  2006-11-24
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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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