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/* written by jaron ,2000-01-10 */
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/*相关文章：http://www.csdn.net/develop/read_article.asp?id=19652*/
<script language="jscript" runat="server">
function ipdecode(eip){
var ip1,ip2,ip3,ip4;
ip1 = movebyter(eip & 0xff000000,3);
ip2 = movebyter(eip & 0x00ff0000,2);
ip3 = movebyter(eip & 0x0000ff00,1);
ip4 = eip & 0x000000ff;
return ip1 + "." + ip2 + "." + ip3 + "." + ip4;
}
function movebytel(num,bytenum){
return num <<= (bytenum*8)
}
function movebyter(num,bytenum){
return num >>>= (bytenum*8)
}
</script>
在vbs中没有位操作，这样在一个页面中用到了js和vbs，并不好，如果用vbs也可以，不过罗嗦了一些，而且有一点注意，如果在vbs中split("202.102.29.6",",")，会得到202，102，29三个数，得不到最后一个6，所以需要将ip换成split("202.102.29.6" & ".",",")
我用vbs做的，由于没有位操作，所以做得比较麻烦
<%
function ip2int(ipstr)
dim iptemp,max
iptemp = split(ipstr&".",".")
max = ubound(iptemp)
if max <> 4 then
exit function
end if
dim a,b,i
a = "&h"
for i = 0 to 3
b = hex(iptemp(i))
if len(b) = 1 then
b = "0"&b
end if
a = a&b
next
ip2int = clng(a)
end function
function int2ip(ip)
dim iptemp,a,ipstr,i,length
iptemp = hex(ip)
length = 8 – len(iptemp)
for i = 1 to length
iptemp = "0" & iptemp
next
a = left(iptemp,2)
a = "&h" & a
i = cint(a)
a = cstr(i)
ipstr = a & "."
a = mid(iptemp,3,2)
a = "&h" & a
i = cint(a)
a = cstr(i)
ipstr = ipstr & a & "."
a = mid(iptemp,5,2)
a = "&h" & a
i = cint(a)
a = cstr(i)
ipstr = ipstr & a & "."
a = right(iptemp,2)
a = "&h" & a
i = cint(a)
a = cstr(i)
ipstr = ipstr & a
int2ip = ipstr
end function
dim testip,testint
testip="202.102.29.6"
testint = ip2int(testip)
response.write testip & " will be encoded to <font color=red>" & testint & "</font><br>"
response.write testip & " will be dencoded to <font color=red>" & int2ip(testint) & "</font><br>"
%>
