Question

这是我目前所拥有的，但它只打印加密中的第一个字母。我哪里错了？

function crypto(){
var password = "Pizza2Day";
var flag = 0;
var encryptedPassword= "";
var originalValues = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"];
var encryptedValues = ["m", "h","t","f","g","k","b","p","j","w","e","r","q","s","l","n","i","u","o","x","z","y","v","d","c","a"];

for (var i=0; i < password.length; i++){
    flag=0;
    for (var r = 0; r < originalValues.length; r++){
        if (originalValues[r] == password.charAt(i)){
        encryptedPassword = encryptedPassword + encryptedValues[r];
        flag = 1;
        break;
        } else if (originalValues[r].toUpperCase() == password.charAt(i)) {
        encryptedPassword = encryptedPassword + 
encryptedValues[r].toUpperCase();
        flag = 1;
        break;
      }
    }
    if (flag == 0) {
      encryptedPassword = encryptedPassword + password.charAt(i);
 }
  return encryptedPassword;
 }
   }
console.log("New Password: " + crypto());

Answer 1

您需要将return语句放在for循环之外：

＆＃13;

function crypto() {
  var password = "Pizza2Day";
  var flag = 0;
  var encryptedPassword = "";
  var originalValues = ["a", "b", "c", "d", "e", "f", "g", "h", "i", "j", "k", "l", "m", "n", "o", "p", "q", "r", "s", "t", "u", "v", "w", "x", "y", "z"];
  var encryptedValues = ["m", "h", "t", "f", "g", "k", "b", "p", "j", "w", "e", "r", "q", "s", "l", "n", "i", "u", "o", "x", "z", "y", "v", "d", "c", "a"];

  for (var i = 0; i < password.length; i++) {
    flag = 0;
    for (var r = 0; r < originalValues.length; r++) {
      if (originalValues[r] == password.charAt(i)) {
        encryptedPassword = encryptedPassword + encryptedValues[r];
        flag = 1;
        break;
      } else if (originalValues[r].toUpperCase() == password.charAt(i)) {
        encryptedPassword = encryptedPassword +
          encryptedValues[r].toUpperCase();
        flag = 1;
        break;
      }
    }
    if (flag == 0) {
      encryptedPassword = encryptedPassword + password.charAt(i);
    }
  }
  return encryptedPassword;
}
console.log("New Password: " + crypto());

＆＃13;

Answer 2

你可以通过使用字符串代替数组来获取另一个方法，并使用String#indexOf来获取给定字符串的索引。

检查索引是否为-1，字符串中缺少字符的值不是必需的，因为此值被视为加密字符串的索引。这会返回一个字符或undefined，即falsy。结合以下logical OR ||，将获取下一个值，在本例中为要编码的字符串的原始字符。

检查原始字符是否为大写字符后，该字符将转换为大写，然后添加到结果字符串中。

＆＃13;

function crypto() {
    var password = "Pizza2Day",
        encryptedPassword = "",
        original =  "abcdefghijklmnopqrstuvwxyz",
        encrypted = "mhtfgkbpjwerqslniuoxzyvdca",
        i, character;

    for (i = 0; i < password.length; i++) {
        character = encrypted[original.indexOf(password[i].toLowerCase())] || password[i];
        if (password[i] === password[i].toUpperCase()) {
            character = character.toUpperCase();
        }
        encryptedPassword += character;
    }
    return encryptedPassword;
}

console.log("New Password: " + crypto());

＆＃13;

使用Javascript进行简单的密码加密

2 个答案: