xxxxxxxxxx
ValidateIPaddress(prompt("Enter IP Address"));
function ValidateIPaddress(ipaddress)
{
if (/^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$/.test(ipaddress))
{
alert("The IP Address I Valid")
}
alert("You have entered an invalid IP address!")
}
xxxxxxxxxx
var ipRegex = new RegExp("^(([1-9]?\\d|1\\d\\d|2[0-5][0-5]|2[0-4]\\d)\\.){3}([1-9]?\\d|1\\d\\d|2[0-5][0-5]|2[0-4]\\d)$");
//0.0.0.0 to 255.255.255.255
xxxxxxxxxx
^((25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\.){3}(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$
//validate