循环无法搜索整个对象数组吗？

Question

对于javascript，我有一个对象数组，我想查看用户的条目是否与数组中三个对象中任何一个的属性中的2个匹配。由于某种原因，我的“ for循环”仅适用于第一个对象，而从不检查其他两个对象。我该如何解决？

class Customer {
  constructor(fN, lN, bal, cID, pass) {
    this.firstName = fN;
    this.lastName = lN;
    this.balance = bal;
    this.customerID = cID;
    this.password = pass;
  }
}

const bankers = [];
bankers.push(new Customer("Jack", "Scott", 3689.21, "4552", "2811"));
bankers.push(new Customer("John", "Smith", 2500.00, "4553", "1234"));
bankers.push(new Customer("Albert", "Price", 100000.00, "4554", "6189"));

let userID = prompt(`Please enter your customer ID.`);
let userPass = prompt(`Please enter your password.`);

for (let i = 0; i < bankers.length; i++) {
  if (bankers[i].customerID === userID && bankers[i].password === userPass) {
    console.log('Yay'); break;
  } else {
    console.log('boo'); break;
  }
}

仅当我为第一个客户进行测试时，我的“ for循环”才有效。如果我尝试输入其他两个的客户ID或密码，它将失败。为什么会这样呢？我认为i变量应该遍历所有3个对象

Answer 1

两件事-一，您在Jack前面缺少引号。第二，您需要在每次循环运行时重新定义变量-将userID和userPass声明移到循环内

：

class Customer {
  constructor(fN, lN, bal, cID, pass) {
    this.firstName = fN;
    this.lastName = lN;
    this.balance = bal;
    this.customerID = cID;
    this.password = pass;
  }
}

const bankers = [];
bankers.push(new Customer("Jack", "Scott", 3689.21, "4552", "2811"));
bankers.push(new Customer("John", "Smith", 2500.00, "4553", "1234"));
bankers.push(new Customer("Albert", "Price", 100000.00, "4554", "6189"));

for (let i = 0; i < bankers.length; i++) {
  let userID = prompt(`Please enter your customer ID.`);
  let userPass = prompt(`Please enter your password.`);
  if (bankers[i].customerID === userID && bankers[i].password === userPass) {
    console.log('Yay');
  } else {
    console.log('boo');
  }
}

编辑

根据评论，我相信您想像这样使用some：

class Customer {
  constructor(fN, lN, bal, cID, pass) {
    this.firstName = fN;
    this.lastName = lN;
    this.balance = bal;
    this.customerID = cID;
    this.password = pass;
  }
}

const bankers = [];
bankers.push(new Customer("Jack", "Scott", 3689.21, "4552", "2811"));
bankers.push(new Customer("John", "Smith", 2500.00, "4553", "1234"));
bankers.push(new Customer("Albert", "Price", 100000.00, "4554", "6189"));

  let userID = prompt(`Please enter your customer ID.`);
  let userPass = prompt(`Please enter your password.`);
  if (bankers.some(banker => banker.customerID == userID && banker.password == userPass)) {
    console.log('Yay');
  } else {
    console.log('boo');
  }