javascript - 在 Node.js 中返回多个参数

Question

假设我们在 Node.js 中有一个函数，返回两个参数的正确方法是什么？

例如，我有一个像上面的代码一样返回加密消息的函数，我也想返回它会被复制的 Hmac 散列。我可以从一个函数返回两个值吗？

const crypto = require('crypto');
exports.AesEncryption = function(Plaintext, SecurePassword) {
    var cipher = crypto.createCipher('aes-128-ecb', SecurePassword);
    var encrypted = cipher.update(Plaintext, 'utf-8', 'base64');
    encrypted += cipher.final('base64');
    return encrypted;
};

Answer 1

您可以只使用数组返回两个值:

const crypto = require('crypto');
exports.AesEncryption = function(Plaintext, SecurePassword) {
    var cipher = crypto.createCipher('aes-128-ecb', SecurePassword);
    var encrypted = cipher.update(Plaintext, 'utf-8', 'base64');
    encrypted += cipher.final('base64');
    return [encrypted, cipher];
};

或者一个对象(首选):

const crypto = require('crypto');
exports.AesEncryption = function(Plaintext, SecurePassword) {
    var cipher = crypto.createCipher('aes-128-ecb', SecurePassword);
    var encrypted = cipher.update(Plaintext, 'utf-8', 'base64');
    encrypted += cipher.final('base64');
    return {encrypted: encrypted, cipher: cipher};
};