js ip 地址格式验证

function validateIPAddress(ip) {
    // IPv4正则表达式
    const ipv4Regex = /^(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]?)$/;
    
    // IPv6正则表达式
    const ipv6Regex = /^(?:[A-F0-9]{1,4}:){7}[A-F0-9]{1,4}$/i;

    if (ipv4Regex.test(ip)) {
        return "IPv4";
    } else if (ipv6Regex.test(ip)) {
        return "IPv6";
    } else {
        return "Invalid IP";
    }
}

// 测试示例
console.log(validateIPAddress("192.168.1.1")); // 输出: IPv4
console.log(validateIPAddress("2001:0db8:85a3:0000:0000:8a2e:0370:7334")); // 输出: IPv6
console.log(validateIPAddress("256.256.256.256")); // 输出: Invalid IP

const ipaddr = require('ipaddr.js');

function validateIPAddress(ip) {
    try {
        const addr = ipaddr.parse(ip);
        return addr.isValid();
    } catch (e) {
        return false;
    }
}

// 测试示例
console.log(validateIPAddress("192.168.1.1")); // 输出: true
console.log(validateIPAddress("2001:0db8:85a3:0000:0000:8a2e:0370:7334")); // 输出: true
console.log(validateIPAddress("256.256.256.256")); // 输出: false

const ipv6Regex = /^(?:[A-F0-9]{1,4}:){7}[A-F0-9]{1,4}$|^(?:[A-F0-9]{1,4}:){1,7}:$|^:(?::[A-F0-9]{1,4}){1,7}$|^(?:[A-F0-9]{1,4}:){1,6}:[A-F0-9]{1,4}$|^(?:[A-F0-9]{1,4}:){1,5}(?::[A-F0-9]{1,4}){1,2}$|^(?:[A-F0-9]{1,4}:){1,4}(?::[A-F0-9]{1,4}){1,3}$|^(?:[A-F0-9]{1,4}:){1,3}(?::[A-F0-9]{1,4}){1,4}$|^(?:[A-F0-9]{1,4}:){1,2}(?::[A-F0-9]{1,4}){1,5}$|^[A-F0-9]{1,4}:(?:(?::[A-F0-9]{1,4}){1,6})$|^:(?:(?::[A-F0-9]{1,4}){1,7}|:)$/i;