javascript - 我使用 JavaScript 函数生成带有大写小写符号和数字的强密码，但它得到只读错误

Question

错误：TypeError：无法分配给字符串 'Wr9[85(W|V,s/BdL^' 的只读属性 '16'

但是我使用代码将其定义为下面的可写检查脚本，将代码放入 zapier 脚本时出现此错误：

function getRandomChar(str) {
  return str.charAt(Math.floor(Math.random() * str.length));
}

function shuffle(array) {
  var currentIndex = array.length,  randomIndex;

  // While there remain elements to shuffle...
  while (currentIndex != 0) {

    // Pick a remaining element...
    randomIndex = Math.floor(Math.random() * currentIndex);
    currentIndex--;

    // And swap it with the current element.
    [array[currentIndex], array[randomIndex]] = [
      array[randomIndex], array[currentIndex]];
  }

  return array;
}

function generatePHelper(groups, length) {
  return function() {
    let pass = groups.map(getRandomChar).join('');
  
    const str = groups.join('');
  
    for (let i = pass.length; i <= length; i++) {
      pass += getRandomChar(str)
    }
    return shuffle(pass);
  };
}

const groups = [
  'ABCDEFGHIJKLMNOPQRSTUVWXYZ',
  'abcdefghijklmnopqrstuvwxyz',
  '1234567890',
  '!@#$%^&()_+~`|}{[]:;?><,./-='
];

const generateP = {};
Object.defineProperty(generateP, 'property1', {
writable: true,
  value: generatePHelper(groups, 16)
  
});
alert(generateP.property1())

标签： javascript

Answer 1

在shuffle()你得到一个字符串（只读类型），但你将它用作一个数组（可变类型）。试试这个（更改和添加的行都标有注释）：

function shuffle(str) { // changed 
  const array = [...str];  // added

  var currentIndex = array.length,  randomIndex;

  // While there remain elements to shuffle...
  while (currentIndex != 0) {

    // Pick a remaining element...
    randomIndex = Math.floor(Math.random() * currentIndex);
    currentIndex--;

    // And swap it with the current element.
    [array[currentIndex], array[randomIndex]] = [
      array[randomIndex], array[currentIndex]];
  }

  return array.join(''); // changed 
}