文本框替换函数

<%
function HtmlEncode(fString)
fString = replace(fString, ">", "&gt;")
fString = replace(fString, "<", "&lt;")
fString = Replace(fString, CHR(32), "&nbsp;")
fString = Replace(fString, CHR(13), "")
fString = Replace(fString, CHR(10) & CHR(10), "</P><P>")
fString = Replace(fString, CHR(10), "<BR>")
fString = Replace(fString, "exec", "e xec")
fString = Replace(fString, "config", "c onfig")
fString = Replace(fString, "echo", "e cho")
fString = Replace(fString, "'", """")
HtmlEncode = fString
end function

function HtmlDecode(fString)
fString = Replace(fString, "&gt;", ">")
fString = Replace(fString, "&lt;", "<")

fString = Replace(fString, "&amp;","&")
fString = Replace(fString,"&quot;", """")
fString = Replace(fString, CHR(32), "&nbsp;")
fString = Replace(fString, CHR(10), "<BR>")

fString = Replace(fString, CHR(10) & CHR(10), "</P><P>")
fString = Replace(fString, "e xec", "exec")
fString = Replace(fString, "c onfig", "config")
fString = Replace(fString, "e cho", "echo")
HtmlUncode = fString
end function
%>

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<%
'----------------------------------------------------------------'
' encodeHTML
' HTML 编码，替换输入内容中的 HTML 代码
' 参数：
' str 需要被编码的字符串
' 返回值：字符串 (被编码过的字符串)
'----------------------------------------------------------------'
Function encodeHTML(ByVal str)
If IsNull(str) Then
encodeHTML = ""
Exit Function
End If
str = Replace(str, ">", "&gt;")
str = Replace(str, "<", "&lt;")
str = Replace(str, Chr(9), "&nbsp;")
str = Replace(str, Chr(39), "'")
str = Replace(str, Chr(34), "&quot;")
str = Replace(str, Chr(13), "")
str = Replace(str, Chr(10), "<br/>")
encodeHTML = str
End Function




'----------------------------------------------------------------'
' decodeHTML
' HTML 解码，将编码过的字符串反向解码，恢复 HTML 代码
' 参数：
' str 需要被解码的字符串
' 返回值：字符串 (解码后的字符串)
'----------------------------------------------------------------'

Function decodeHTML(ByVal str)
If IsNull(str) Then
decodeHTML = ""
Exit Function
End If
Str = replace(Str, "&gt;", ">")
Str = replace(Str, "&lt;", "<")
Str = Replace(Str, "", CHR(13))
Str = Replace(Str, "</P><P>", CHR(10) & CHR(10))
Str = Replace(Str, "<BR>", CHR(10))
Str = Replace(Str, "<br/>", CHR(10))
Str = Replace(Str, " ", CHR(9))
Str = Replace(Str, "'", CHR(39))
Str = Replace(Str, "&quot;", CHR(34))
Str = Replace(Str, "e xec", "exec")
Str = Replace(Str, "c onfig", "config")
Str = Replace(Str, "e cho", "echo")
Str = Replace(Str, """", "'")
decodeHTML = str
End Function

'这两个函数也是一对逆向操作。很多人都问到自己提交的文章怎么没有换行了，上面的 encodeHTML 就能帮上忙。一般大家都写作 HTMLEncode，这里是为了统一命名(并且区别与 Server 方法)，所以写作 encodeHTML。另外，有一个Server.HTMLEncode，功能相似，只是一般自己编写的函数更加灵活。
%>
-------------------------------------------------------------------------------

<%
'替换掉html标记，使其能在页面显示标记
function htmlencode2(str)
dim result
dim l
if isNULL(str) then
htmlencode2=""
exit function
end if
l=len(str)
result=""
dim i
for i = 1 to l
select case mid(str,i,1)
case "<"
result=result+"&lt;"
case ">"
result=result+"&gt;"
case chr(13)
result=result+"<br>"
case chr(34)
result=result+"&quot;"
case "&"
result=result+"&amp;"
case chr(32)
result=result+"&nbsp;"
if i+1<=l and i-1>0 then
if mid(str,i+1,1)=chr(32) or mid(str,i+1,1)=chr(9) or mid(str,i-1,1)=chr(32) or mid(str,i-1,1)=chr(9) then
result=result+"&nbsp;"
else
result=result+" "
end if
else
result=result+"&nbsp;"
end if
case chr(9)
result=result+" "
case else
result=result+mid(str,i,1)
end select
next
htmlencode2=result
end function
%>