const net = require("net");
console.log(net.isIP('color'));
console.log(net.isIP('127.0.0.1'));
console.log(net.isIP('fe80::5c33:4dbb:a17b:9e86%18'));
console.log('----------');
console.log(net.isIPv4('color'));
console.log(net.isIPv4('127.0.0.1'));
console.log(net.isIPv4('fe80::5c33:4dbb:a17b:9e86%18'));
console.log('----------');
console.log(net.isIPv6('color'));
console.log(net.isIPv6('127.0.0.1'));
console.log(net.isIPv6('fe80::5c33:4dbb:a17b:9e86%18'));

结果

0
4
6
----------
false
true
false
----------
false
false
true

ipv6测试