求验证IP地址和端口的正则正则正则正则正则正则正则正则正则正则正则正则正则正则正则正则

Question

/^(\d{1,3})\.(\d{1,3})\.(\d{1,3})\.(\d{1,3})$/

Answer 1

checkIp($ip){  
           $e="(1[0-9]{2}  ¦[1-9]?[0-9]  ¦2[0-4][0-9]  ¦25[0-5])";  
           if(ereg("^$e\.$e\.$e\.$e$",$ip)){  
                       echo  $ip."通过<br>";  
           }  
           else  
                       echo  $ip."错误<br>";

Answer 2

<script language="javascript">
var IP = /^(?:(?:[1-9]?[0-9]|1[0-9]{2}|2(?:[0-4][0-9]|5[0-5]))\.){3}(?:[1-9]?[0-9]|1[0-9]{2}|2(?:[0-4][0-9]|5[0-5]))$/;if (!IP.test("192.168.1.256"))
{
    alert("IP ERR");
}
</script>

Answer 3

汗，发过来怎么成这样了<script language="javascript">
var IP=/^(?:(?:[1-9]?[0-9]|1[0-9]{2}|2(?:[0-4][0-9]|5[0-5]))\.){3}(?:[1-9]?[0-9]|1[0-9]{2}|2(?:[0-4][0-9]|5[0-5]))$/;if (!IP.test("192.168.1.256"))
{
   alert("IP ERR");
}
</script>

Answer 4

恩。噢刚搞出来，如下：
    var integer = parseInt(ServerPort.value);
    if (integer.toString().length != ServerPort.value.length)
    {
        lblMessage.style.color = "red";
        lblMessage.innerHTML = "The ftp server port pattern is wrong";
        return false;
    }
    if (ServerPort.value < 0 || ServerPort.value > 65535)
    {
        lblMessage.style.color="red";
        lblMessage.innerHTML ="The ftp server port pattern is wrong";
        return false;
    }