将其他文件中的值 objects 调用为 object 值

Question

我的消息 object 包含：

const message = {
        headers: {
            i need to call another object to here
        }
};

我在另一个文件中有配置 object :

exports.custom_headers{

    'x-my-key': 'header value',
    'x-another-key': 'another value'

}

我需要用配置文件

中的 object 替换 headers 的整个名称和值

如何引用？我试过直接调用 objects 但没有成功

通常 object 是这样工作的

const message = {
    from: random_message.fromname+'<'+random_message.fromemail+'>',
    to: email,
    subject: random_message.subject,
    text: random_message.text,
    html: random_message.html,
    headers: {
            'x-my-key': 'header value',
            'x-another-key': 'another value'
    }
};

但我需要将 headers 导出到另一个文件

Answer 1

如果这是你想要的。您可以使用 ...（扩展运算符）来扩展对象的键。

const custom_headers =  {
    'x-my-key': 'header value',
    'x-another-key': 'another value'
};

const message = {
   from: 'random_message.fromname'+'<'+'random_message.fromemail'+'>',
   to: 'email',
   subject: 'random_message.subject',
   text: 'random_message.text',
   html: 'random_message.html',
  headers:{
    ...custom_headers
  }
};

console.log(message);

Answer 2

//basically you have 2 object and wants to override one object's with another

//here is one object
const message = {
        headers: {
            "old-header1": "old-header-value1",
        "common-property": "old-header-value2"
        }
};

//here is config object
const config = {
    "new-header1": "new-header-value1",

    "common-property": "new-header-value2"
};

//message.headers = {}; //uncomment this if you want to remove all older properties

//to override properties
Object.keys(config).forEach(function(d) { message.headers[d] = config[d]; });

将其他文件中的值 objects 调用为 object 值

call value objects from other files into an object value

javascript

object

call

node.js