Question

我尝试摆弄代码，这是我最接近完成所需功能的代码。截至目前，它重写了索引[0]，使索引[1]保持不变，并添加了索引[2]。我正在尝试获取它，以使index [0]和index [1]都保持不变，只是添加了新索引。

// Store all accounts and information
var account = [
{
    username: "John Sant",
    password: "dog123",
    balance: 450
},
{
    username: "Rebecca Dunson",
    password: "Munco38",
    balance: 1276
}
]

// Create new user or proceed to sign in
var task = prompt("Do you have an account? (Yes or No)")
if(task.toLowerCase() === "no"){
    for(i = 0; i <= account.length; i++){
        var newUsername = prompt("Enter your first and last name:")
        account[i++] = {username: newUsername}
};
}

现在仅关注用户名

Answer 1

您不需要for循环。您只需将accounts数组的新值push()设置为新条目即可。

// Store all accounts and information
var account = [{
    username: "John Sant",
    password: "dog123",
    balance: 450
  },
  {
    username: "Rebecca Dunson",
    password: "Munco38",
    balance: 1276
  }
]

// Create new user or proceed to sign in
var task = prompt("Do you have an account? (Yes or No)")
if (task.toLowerCase() === "no") {
  var newUsername = prompt("Enter your first and last name:")
  var newAccount = {username: newUsername}
  newAccount.password = prompt("Enter a new password:")
  account.push(newAccount)
};

// log all accounts
console.log(account)

通过提示符在数组中添加新对象

1 个答案: