写一个函数，遍历一个对象和字符串，返回账户余额和账户名答案

【问题标题】：Write a function, iterate through an object and string, return account balance and account name写一个函数，遍历一个对象和字符串，返回账户余额和账户名
【发布时间】：2019-02-06 22:12:11
【问题描述】：

我卡在这段代码上，因为我能够遍历对象（下面列出了两种方法），但是，如果我需要对象中的第二个键，我不确定如何访问它自动键。

以下是问题的说明：编写一个函数 bankAccountChecker，它接收一个对象，该对象代表某人的整个银行信息，以及一个“帐户”字符串。您的函数应该检查银行信息的输入“帐户”，并返回一个包含余额和帐户检查的字符串（请参阅下面的示例函数调用）

这是我尝试的第一个代码sn-p：

function bankAccountChecker (bankingInfo, account) {
  for(const key in bankingInfo) {
    let value = bankingInfo[key];
    return `You have $ ${bankingInfo[key]} in your ${account} account`
  }
}

var account001 = {
  checking: 1000000,
  savings: 2
};

var account002 = {
  business: 2000000,
  personal: -4
};

var account003 = {
  travel: 534,
  education: 1012
};

bankAccountChecker(account001, 'checking'); //"You have $1000000 in your checking account"
bankAccountChecker(account002, 'personal'); //"You have $-4 in your personal account"
bankAccountChecker(account003, 'travel'); //"You have $534 in your travel account"

这是我尝试过的第二个：

function bankAccountChecker (bankingInfo, account) {
  const values = Object.values(bankingInfo);
    return `You have $ ${values} in your ${account} account`
}

var account001 = {
  checking: 1000000,
  savings: 2
};

var account002 = {
  business: 2000000,
  personal: -4
};

var account003 = {
  travel: 534,
  education: 1012
};

bankAccountChecker(account001, 'checking'); //"You have $1000000 in your checking account"
bankAccountChecker(account002, 'personal'); //"You have $-4 in your personal account"
bankAccountChecker(account003, 'travel'); //"You have $534 in your travel account"

无论如何，我运行的每个代码 sn-p 都是不正确的。如果您有任何反馈，请告诉我。谢谢！（我已经包含了代码应该迭代的测试和对象）。

【问题讨论】：

bankingInfo[account] 内bankAccountChecker ()

标签： javascript object iteration

【解决方案1】：

您可以使用bracket notation 访问对象中的帐户：

function bankAccountChecker(bankingInfo, account) {
  return `You have $ ${bankingInfo[account]} in your ${account} account`
}

var account001 = {
  checking: 1000000,
  savings: 2
};

var account002 = {
  business: 2000000,
  personal: -4
};

var account003 = {
  travel: 534,
  education: 1012
};

console.log( bankAccountChecker(account001, 'checking') ); 
console.log( bankAccountChecker(account002, 'personal') ); 
console.log( bankAccountChecker(account003, 'travel') );

【讨论】：

【解决方案2】：

你非常接近 :) 你只需要引用对象键。 [帐户] 例如。

function bankAccountChecker (bankingInfo, account) {
    return`You have $ ${bankingInfo[account]} in your ${account} account`
}

var account001 = {
  checking: 1000000,
  savings: 2
};

var account002 = {
  business: 2000000,
  personal: -4
};

var account003 = {
  travel: 534,
  education: 1012
};

console.log(bankAccountChecker(account001, 'checking')); //"You have $1000000 in your checking account"
console.log(bankAccountChecker(account002, 'personal')); //"You have $-4 in your personal account"
console.log(bankAccountChecker(account003, 'travel')); //"You have $534 in your travel account"

【讨论】：