IP地址
if (!/^(\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])){3}$/.test($.trim($('#addIPAddress').val()))) {
alert('IP地址格式不正确,请重新输入!');
$('#addIPAddress').focus();
}