Question

我正在创建这个函数（它在JavaScript中的问题）。运行代码给了我一个

语法错误：意外令牌=

我似乎无法弄清楚错误是什么。我认为这是由于这段代码引起的：

contacts[contacts.length]

但我不确定，因为有人告诉我这可能吗？哦，contacts是一个数组。我想要做的是将对象添加到数组的末尾。任何帮助将不胜感激，我对JS很新。这是我的全部功能：

function add(firstName, lastName, email, phoneNumber) {
   contacts[contacts.length] = {
      firstName = this.firstName,
      lastName = this.lastName,
      email = this.email,
      phoneNumber = this.phoneNumber
    };
};
add("Ross", "Lynch", "rossShorR5@r5rocks.com", "(650) 222-2222");
list();

Answer 1

键/值对列表以逗号分隔，每个键和值用冒号和:分隔，以便将键与值分开。继续阅读JavaScript Objects

您的正确代码是：

function add(firstName, lastName, email, phoneNumber) {
   contacts[contacts.length] = {
      firstName   : this.firstName,
      lastName    : this.lastName,
      email       : this.email,
      phoneNumber : this.phoneNumber
    };
};
add("Ross", "Lynch", "rossShorR5@r5rocks.com", "(650) 222-2222");
list();

Answer 2

使用“this”执行此操作的另一种方法是：

functon Contact(firstName, lastName, email, phoneNumber)
{
    this.firstName = firstName;
    this.lastName = lastName;
    this.email = email;
    this.phoneNumber = phoneNumber;
}
function addContact(firstName, lastName, email, phoneNumber)
{
    contacts[contacts.length] = new Contact(firstName, lastName, email, phoneNumber);
}
addContact("Ross", "Lynch", "rossShorR5@r5rocks.com", "(650) 222-2222");

函数直接添加对象;数组的结尾

2 个答案: