ASP实用函数库1

最新推荐文章于 2025-04-24 22:21:02 发布

m1maomao

最新推荐文章于 2025-04-24 22:21:02 发布

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分类专栏： Asp 文章标签： ASP 浏览器 F#

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<%
'判断文件名是否合法
Function isFilename(aFilename)
Dim sErrorStr,iNameLength,i
isFilename=TRUE
sErrorStr=Array("/","\",":","*","?","""","<",">","|")
iNameLength=Len(aFilename)
If iNameLength<1 Or iNameLength=null Then
isFilename=FALSE
Else
For i=0 To 8
   If instr(aFilename,sErrorStr(i)) Then
    isFilename=FALSE
   End If
Next
End If
End Function

'去掉字符串头尾的连续的回车和空格
function trimVBcrlf(str)
trimVBcrlf=rtrimVBcrlf(ltrimVBcrlf(str))
end function

'去掉字符串开头的连续的回车和空格
function ltrimVBcrlf(str)
dim pos,isBlankChar
pos=1
isBlankChar=true
while isBlankChar
if mid(str,pos,1)=" " then
   pos=pos+1
elseif mid(str,pos,2)=VBcrlf then
   pos=pos+2
else
   isBlankChar=false
end if
wend
ltrimVBcrlf=right(str,len(str)-pos+1)
end function

'去掉字符串末尾的连续的回车和空格
function rtrimVBcrlf(str)
dim pos,isBlankChar
pos=len(str)
isBlankChar=true
while isBlankChar and pos>=2
if mid(str,pos,1)=" " then
   pos=pos-1
elseif mid(str,pos-1,2)=VBcrlf then
   pos=pos-2
else
   isBlankChar=false
end if
wend
rtrimVBcrlf=rtrim(left(str,pos))
end function

'判断Email是否有效,返回1表示正确
Function isEmail(aEmail)
Dim iLocat,v,iLength,i,checkletter
If instr(aEmail,"@") = 0 Or instr(aEmail,".") = 0 Then
isEmail=0
EXIT FUNCTION
End If
iLocat=instr(aEmail,"@")
If instr(iLocat,aEmail,".")=0 Or instr(iLocat+1,aEmail,"@")>0 Then
isEmail=0
EXIT FUNCTION
End If
If left(aEmail,1)="." Or right(aEmail,1)="." Or left(aEmail,1)="@" Or right(aEmail,1)="@" Then
isEmail=0
EXIT FUNCTION
End If
v="1234567890abcdefghijklmnopqrstuvwxyzABCDEFGHIJKLMNOPQRSTUVWXYZ_-.@"
iLength=len(aEmail)
For i=1 To iLength
checkletter=mid(aEmail,i,1)
If instr(v,checkletter)=0 Then
isEmail=0
EXIT FUNCTION
End If
Next
isEmail=1
End Function

'测试用:显示服务器信息
Sub showServer
Dim name
Response.write "<Table border=1 bordercolor=lightblue CELLSPACING=0>"
for each name in request.servervariables
Response.write "<tr>"
Response.write "<td>"&name&"</td>"
Response.write "<td>"&request.servervariables(name)&"<br></td>"
Response.write "</tr>"
next
Response.write "</table>"
End Sub

'测试用:显示Rs结果集以及字段名称
Sub showRs(rs)
Dim strTable,whatever
Response.write "<center><table><tr>"
for each whatever in rs.fields
response.write "<td><b>" & whatever.name & "</B></TD>"
next
strTable = "</tr><tr><td>"&rs.GetString(,,"</td><td>","</tr><tr><td>"," ") &"</td></tr></table></center>"
Response.Write(strTable)
End Sub

'用HTML格式显示文本
function HTMLEncode(fString)
if not isnull(fString) then
fString = replace(fString, ">", ">")
fString = replace(fString, "<", "<")

    fString = Replace(fString, CHR(32), " ")
    fString = Replace(fString, CHR(34), """)
    fString = Replace(fString, CHR(39), "'")
    fString = Replace(fString, CHR(13), "")
    fString = Replace(fString, CHR(10) & CHR(10), "</P><P> ")
    fString = Replace(fString, CHR(10), "<BR> ")
    HTMLEncode = fString
end if
end function

'测试用:显示调试错误信息
Sub showError
Dim sErrMsg
sErrMsg=Err.Source&" "&Err.Description
Response.write "<center>"&sErrMsg&"</center>"
Err.clear
End Sub

'显示文字计数器
Sub showCounter
Dim fs,outfile,filename,count
filename=server.mappath("count.txt")
Set fs = CreateObject("Scripting.FileSystemObject")
If fs.fileExists(filename) Then
Set outfile=fs.openTextFile(filename,1)
count=outfile.readline
count=count+1
Response.write "<center>浏览人次："&count&"<center>"
outfile.close
Set outfile=fs.CreateTextFile(filename)
outfile.writeline(count)
Else
Set outfile=fs.openTextFile(filename,8,TRUE)
count=0
outfile.writeline(count)
END IF
outfile.close
set fs=nothing
End Sub
%>

----------------------------------------------------------------------------------------------------------------------

Array()
　FUNCTION: 返回一个数组
　SYNTAX: Array(list)
　ARGUMENTS: 字符，数字均可
　EXAMPLE: <%
Dim myArray()
For i = 1 to 7
　 Redim Preserve myArray(i)
　 myArray(i) = WeekdayName(i)
Next
%>
　RESULT: 建立了一个包含7个元素的数组myArray
myArray("Sunday","Monday", ... ... "Saturday")
　
CInt()
　FUNCTION: 将一个表达式转化为数字类型
　SYNTAX: CInt(expression)
　ARGUMENTS: 任何有效的字符均可
　EXAMPLE: <%
f = "234"
response.write cINT(f) + 2
%>
　RESULT: 236
转化字符"234"为数字"234"，如果字符串为空，则返回0值　
　
CreateObject()
　FUNCTION: 建立和返回一个已注册的ACTIVEX组件的实例。
　SYNTAX: CreateObject(objName)
　ARGUMENTS: objName 是任何一个有效、已注册的ACTIVEX组件的名字.
　EXAMPLE: <%
Set con = Server.CreateObject("ADODB.Connection")
%>
　RESULT:　
　
CStr()
　FUNCTION: 转化一个表达式为字符串.
　SYNTAX: CStr(expression)
　ARGUMENTS: expression 是任何有效的表达式。
　EXAMPLE: <%
s = 3 + 2
response.write "The result is: " & cStr(s)
%>
　RESULT: 转化数字“5”为字符“5”。
　
Date()
　FUNCTION: 返回当前系统日期.
　SYNTAX: Date()
　ARGUMENTS: None.
　EXAMPLE: <%=Date%>
　RESULT: 8/4/99
　
DateAdd()
　FUNCTION: 返回一个被改变了的日期。
　SYNTAX: DateAdd(timeinterval,number,date)
　ARGUMENTS: timeinterval is the time interval to add; number is amount of
time intervals to add; and date is the starting date.
　EXAMPLE: <%
currentDate = #8/4/99#
newDate = DateAdd("m",3,currentDate)
response.write newDate
%>

<%
currentDate = #12:34:45 PM#
newDate = DateAdd("h",3,currentDate)
response.write newDate
%>
　RESULT: 11/4/99
3:34:45 PM

"m" = "month";
"d" = "day";

If currentDate is in time format then,
"h" = "hour";
"s" = "second";
　
DateDiff()
　FUNCTION: 返回两个日期之间的差值。
　SYNTAX: DateDiff(timeinterval,date1,date2 [, firstdayofweek ][,
firstweekofyear]])
　ARGUMENTS: timeinterval 表示相隔时间的类型，如“M“表示“月”。
　EXAMPLE: <%
fromDate = #8/4/99#
toDate = #1/1/2000#
response.write "There are " & _
　 DateDiff("d",fromDate,toDate) & _
　 " days to millenium from 8/4/99."
%>
　RESULT: 从8/4/99 到2000年还有 150 天.
　
Day()
　FUNCTION: 返回一个月的第几日　.
　SYNTAX: Day(date)
　ARGUMENTS: date 是任何有效的日期。　
　EXAMPLE: <%=Day(#8/4/99#)%>
　RESULT: 4

------------------------------------------------------------------------------------------

FormatCurrency()
　FUNCTION: 返回表达式，此表达式已被格式化为货币值　
　SYNTAX: FormatCurrency(Expression [, Digit ][, LeadingDigit ][, Paren ][,
GroupDigit]]]])
　ARGUMENTS:　Digit 指示小数点右侧显示位数的数值。默认值为 -1，指示使用的是
计算机的区域设置; LeadingDigit 三态常数，指示是否显示小数值小数点前面的
零。　
　EXAMPLE: <%=FormatCurrency(34.3456)%>
　RESULT: $34.35
　
FormatDateTime()
　FUNCTION: 返回表达式，此表达式已被格式化为日期或时间
　SYNTAX: FormatDateTime(Date, [, NamedFormat])
　ARGUMENTS: NamedFormat 指示所使用的日期/时间格式的数值，如果省略，则使用
vbGeneralDate.
　EXAMPLE: <%=FormatDateTime("08/4/99", vbLongDate)%>
　RESULT: Wednesday, August 04, 1999
　
FormatNumber()
　FUNCTION: 返回表达式，此表达式已被格式化为数值.
　SYNTAX: FormatNumber(Expression [, Digit ][, LeadingDigit ][, Paren ][,
GroupDigit]]]])
　ARGUMENTS:　Digit 指示小数点右侧显示位数的数值。默认值为 -1，指示使用的是
计算机的区域设置。; LeadingDigit i指示小数点右侧显示位数的数值。默认值为 -
1，指示使用的是计算机的区域设置。; Paren 指示小数点右侧显示位数的数值。默认
值为 -1，指示使用的是计算机的区域设置。; GroupDigit i指示小数点右侧显示位数
的数值。默认值为 -1，指示使用的是计算机的区域设置。.
　EXAMPLE: <%=FormatNumber(45.324567, 3)%>
　RESULT: 45.325
　
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]]]])
　ARGUMENTS: 同上.
　EXAMPLE: <%=FormatPercent(0.45267, 3)%>
　RESULT: 45.267%
　
Hour()
　FUNCTION: 以24时返回小时数.
　SYNTAX: Hour(time)
　ARGUMENTS:　
　EXAMPLE: <%=Hour(#4:45:34 PM#)%>
　RESULT: 16
(Hour has been converted to 24-hour system)