function checkIP2(sIPAddress)
{
var exp=/^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$/;
var reg = sIPAddress.match(exp);
var ErrMsg="你输入的是一个非法的IP地址段!\nIP段为::xxx.xxx.xxx.xxx(xxx为0-255)!"
var Msg="你输入的是一个合法的IP地址段!"
if(reg==null)
{
alert(ErrMsg);
}
else
{
alert(reg);
}
}
{
var exp=/^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$/;
var reg = sIPAddress.match(exp);
var ErrMsg="你输入的是一个非法的IP地址段!\nIP段为::xxx.xxx.xxx.xxx(xxx为0-255)!"
var Msg="你输入的是一个合法的IP地址段!"
if(reg==null)
{
alert(ErrMsg);
}
else
{
alert(reg);
}
}
function checkIP2(sIPAddress)
{
var exp=/^(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])\.(\d{1,2}|1\d\d|2[0-4]\d|25[0-5])$/;
var reg = sIPAddress.match(exp);
var ErrMsg="你输入的是一个非法的IP地址段!\nIP段为::xxx.xxx.xxx.xxx(xxx为0-255)!"
var Msg="你输入的是一个合法的IP地址段!"
if(reg==null)
{
alert(ErrMsg);
}
else
{
alert(reg);
}
} checkIP2(prompt("请输入要检测的IP",""));
</script>
{
re=/(\d+)\.(\d+)\.(\d+)\.(\d+)/g //匹配IP地址的正则表达式
if(re.test(ip))
{
return RegExp.$1*Math.pow(255,3))+RegExp.$2*Math.pow(255,2))+RegExp.$3*255+RegExp.$4*1
}
else
{
alert("Not a valid IP address!")
}
}