javascript - angularjs随 secret 码生成器至少一个大写小写数字和特殊字符

Question

如何让这个随 secret 码生成器生成至少一个组件？
目前，生成的密码中不包含一个数字，或者遗漏了任何其他类型。如何使其至少生成其中一种类型？

        $scope.passwordLength = 12;
        $scope.addUpper       = true;
        $scope.addNumbers     = true;
        $scope.addSymbols     = true;

        $scope.createPassword = function(){
            var lowerCharacters = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'];
            var upperCharacters = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'];
            var numbers = ['0','1','2','3','4','5','6','7','8','9'];
            var symbols = ['!', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/', ':', ';', '<', '=', '>', '?', '@', '[', '\\', ']', '^', '_', '`', '{', '|', '}', '~'];
            var finalCharacters = lowerCharacters;
            if($scope.addUpper){
                finalCharacters = finalCharacters.concat(upperCharacters);
            }
            if($scope.addNumbers){
                finalCharacters = finalCharacters.concat(numbers);
            }
            if($scope.addSymbols){
                finalCharacters = finalCharacters.concat(symbols);
            }
            var passwordArray = [];
            for (var i = 1; i < $scope.passwordLength; i++) {
                passwordArray.push(finalCharacters[Math.floor(Math.random() * finalCharacters.length)]);
            };
            $scope.password = passwordArray.join("");
        };

Answer 1

您正在做的是创建所有可能字符的数组( finalCharacters )并随机抽取 12 个字符。

您需要做的是从每个需要的数组( upperCharacters 、 numbers 、 symbols )中取出至少一个随机字符并将其洗牌。

算法示例:

生成lowerCharacters的数量，upperCharacters的数量，数字的数量和符号的数量(即3 lower，3 upper，3 numbers，3 symbols)

将每个数组(lowerCharacters，upperCharacters，...)中适当数量的随机字符插入数组(即 passwordArray)

洗牌passwordArray

加入passwordArray

第一步可能是:

noOfLowerCharacters = 0 , noOfUpperCharacters = 0 , noOfUpperCharacters = 0

计算所需类型的数量( 1 、 2 或 3 )。将其存储在变量 noOfneededTypes 中.

从 1 的范围内获取随机数到( passwordLength - noOfneededTypes )。将其存储在变量 noOfLowerCharacters 中.

创建 usedTypeCounter .将值设置为 1

如果 addUpper然后从 1 的范围内获取随机数到(passwordLength - noOfneededTypes + usedTypeCounter - noOfLowerCharacters)。将其存储在变量 noOfUpperCharacters 中.增加usedTypeCounter

如果 addNumbers然后从 1 的范围内获取随机数至( passwordLength - noOfneededTypes + usedTypeCounter - noOfLowerCharacters - noOfUpperCharacters)。将其存储在变量 noOfNumbers 中.

如果 addSymbols然后 noOfSymbols = passwordLength - noOfLowerCharacters - noOfUpperCharacters - noOfNumbers

实现示例:

  $scope.passwordLength = 12;
  $scope.addUpper = true;
  $scope.addNumbers = true;
  $scope.addSymbols = true;

  function getRandomInt(min, max) {
    return Math.floor(Math.random() * (max - min + 1)) + min;
  }

  // shuffle function taken from http://stackoverflow.com/a/12646864/4989081
  function shuffleArray(array) {
    for (var i = array.length - 1; i > 0; i--) {
      var j = Math.floor(Math.random() * (i + 1));
      var temp = array[i];
      array[i] = array[j];
      array[j] = temp;
    }
    return array;
  }

  $scope.createPassword = function() {
    var lowerCharacters = ['a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'];
    var upperCharacters = ['A', 'B', 'C', 'D', 'E', 'F', 'G', 'H', 'I', 'J', 'K', 'L', 'M', 'N', 'O', 'P', 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', 'Y', 'Z'];
    var numbers = ['0', '1', '2', '3', '4', '5', '6', '7', '8', '9'];
    var symbols = ['!', '#', '$', '%', '&', '\'', '(', ')', '*', '+', ',', '-', '.', '/', ':', ';', '<', '=', '>', '?', '@', '[', '\\', ']', '^', '_', '`', '{', '|', '}', '~'];

var noOfLowerCharacters = 0,
  noOfUpperCharacters = 0,
  noOfNumbers = 0,
  noOfSymbols = 0;

var noOfneededTypes = $scope.addUpper + $scope.addNumbers + $scope.addSymbols;

var noOfLowerCharacters = getRandomInt(1, $scope.passwordLength - noOfneededTypes);

var usedTypeCounter = 1;

if ($scope.addUpper) {
  noOfUpperCharacters = getRandomInt(1, $scope.passwordLength - noOfneededTypes + usedTypeCounter - noOfLowerCharacters);
  usedTypeCounter++;
}

if ($scope.addNumbers) {
  noOfNumbers = getRandomInt(1, $scope.passwordLength - noOfneededTypes + usedTypeCounter - noOfLowerCharacters - noOfUpperCharacters);
  usedTypeCounter++;
}

if ($scope.addSymbols) {
  noOfSymbols = $scope.passwordLength - noOfLowerCharacters - noOfUpperCharacters - noOfNumbers;
}

var passwordArray = [];

for (var i = 0; i < noOfLowerCharacters; i++) {
  passwordArray.push(lowerCharacters[getRandomInt(1, lowerCharacters.length - 1)]);
}

for (var i = 0; i < noOfUpperCharacters; i++) {
  passwordArray.push(upperCharacters[getRandomInt(1, upperCharacters.length - 1)]);
}

for (var i = 0; i < noOfNumbers; i++) {
  passwordArray.push(numbers[getRandomInt(1, numbers.length - 1)]);
}

for (var i = 0; i < noOfSymbols; i++) {
  passwordArray.push(symbols[getRandomInt(1, symbols.length - 1)]);
}

passwordArray = shuffleArray(passwordArray);

return passwordArray.join("");
};

$scope.password = $scope.createPassword();

见工作: http://jsfiddle.net/cmoqkkw8/