ipv6
/^([\da-f]{1,4}:){7}([\da-f]{1,4}|(([01]?\d{1,2}|2[0-4]\d|25[0-5])(\.|$)){4})$/i.test('0001:2222:3456:7890:abcd:e:fff:12.34.56.78')
true
/^([\da-f]{1,4}:){7}([\da-f]{1,4}|(([01]?\d{1,2}|2[0-4]\d|25[0-5])(\.|$)){4})$/i.test('2001:db8:1234:0000:0000:0000:0000:0000')
true