js 判断版本号

function compareVersions(version1, version2) {
    const v1 = version1.split('.').map(Number);
    const v2 = version2.split('.').map(Number);

    for (let i = 0; i < Math.max(v1.length, v2.length); i++) {
        const num1 = v1[i] || 0;
        const num2 = v2[i] || 0;

        if (num1 > num2) return 1;
        if (num1 < num2) return -1;
    }

    return 0;
}

// 使用示例
console.log(compareVersions('1.2.3', '1.2.4')); // 输出: -1
console.log(compareVersions('1.2.3', '1.2.3')); // 输出: 0
console.log(compareVersions('1.2.4', '1.2.3')); // 输出: 1

function compareVersionsWithPrerelease(version1, version2) {
    const v1Parts = version1.split(/\.|-/);
    const v2Parts = version2.split(/\.|-/);

    for (let i = 0; i < Math.max(v1Parts.length, v2Parts.length); i++) {
        const part1 = v1Parts[i];
        const part2 = v2Parts[i];

        const isNum1 = !isNaN(Number(part1));
        const isNum2 = !isNaN(Number(part2));

        if (isNum1 && isNum2) {
            const num1 = Number(part1);
            const num2 = Number(part2);

            if (num1 > num2) return 1;
            if (num1 < num2) return -1;
        } else if (isNum1) {
            return 1;
        } else if (isNum2) {
            return -1;
        } else {
            const comparison = part1.localeCompare(part2);
            if (comparison !== 0) return comparison;
        }
    }

    return 0;
}

// 使用示例
console.log(compareVersionsWithPrerelease('1.2.3-alpha.1', '1.2.3')); // 输出: -1
console.log(compareVersionsWithPrerelease('1.2.3', '1.2.3-alpha.1')); // 输出: 1