Question

如何用正则表达式匹配IP地址

我想要利用正则表达式来实现对比如123.123.*.*这个IP段的识别
若为真则输出true
但是不知道如何实现，请高手帮忙
我是菜鸟，麻烦大家能给出完整的代码段么？

Answer 1

<%
'asp 的

Set reg = New RegExp
reg.Pattern = "^123.123(.(\d|[1-9]\d|1\d{2}|2[0-4]\d|25[0-5])){2}$"
reg.IgnoreCase = True
reg.Global = True
response.Write(reg.test("123.123.25.25"))

%>

//JavaScript 的

<script type="text/javascript">
var reg = /^123.123(.(\d|[1-9]\d|1\d{2}|2[0-4]\d|25[0-5])){2}$/;
alert(reg.test("123.123.25.25"));
</script>

Answer 2

^123.123(\\.((2[0-4]|1?\\d?)\\d)){2}

Answer 3

^(123\.123)((\.25[0-5])|(\.2[0-4]\d)|(\.[01]?\d\d?)){2}$

Answer 4

<%
'asp
的
Set
reg
=
New
RegExp
reg.Pattern
=
"^123.123(.(\d|[1-9]\d|1\d{2}|2[0-4]\d|25[0-5])){2}$"
reg.IgnoreCase
=
True
reg.Global
=
True
response.Write(reg.test("123.123.25.25"))
%>
//JavaScript
的
<script
type="text/javascript">
var
reg
=
/^123.123(.(\d|[1-9]\d|1\d{2}|2[0-4]\d|25[0-5])){2}$/;
alert(reg.test("123.123.25.25"));
</script>

Answer 5

123.123.[1,255].[1,255]