Javascript 如何正确分配对象属性是一个问题
我有以下目标:Javascript 如何正确分配对象属性是一个问题,javascript,ecmascript-6,Javascript,Ecmascript 6,我有以下目标: { "_id": "583c4e054c99d310f543b11e", "cellphone": "123456", "password": "$2a$10$d3SeD5CCzTo6wBR/4SGUu.i7vUvX98N1NlpBTwDdWCRrIYcVwWmCO", "fullname": "some name", "gender": "male", "avatar": { "_id": "583c4e054c99d310f543b11d",
{
"_id": "583c4e054c99d310f543b11e",
"cellphone": "123456",
"password": "$2a$10$d3SeD5CCzTo6wBR/4SGUu.i7vUvX98N1NlpBTwDdWCRrIYcVwWmCO",
"fullname": "some name",
"gender": "male",
"avatar": {
"_id": "583c4e054c99d310f543b11d",
"__v": 0,
"url": "",
"likesCount": 0,
"description": "Hey guys"
},
"__v": 0
}
在下一段代码中,我想创建一个新对象,不使用mongodb(_v)中的属性,并将_id重命名为id
let plainUser = {
id: user._id,
...user.toObject(),
}
delete plainUser._id;
delete plainUser.password;
delete plainUser.__v;
delete plainUser.avatar._id;
delete plainUser.avatar.__v;
return res.send(plainUser);
我想我可以做得与众不同。关于如何使用ES6正确改进代码的任何建议?最好明确说明要保留哪些属性,而不是指定要删除哪些属性。而且
delete
效率很低。那就去买吧
return res.send({
id: user._id,
cellphone: user.cellphone,
fullname: user.fullname,
gender: user.gender,
avatar: {
url: user.avatar.url,
likesCount: user.avatar.likesCount,
description: user.avatar.description
}
});
对于一些简化,请从以下方面了解该方法:
最好明确说明要保留哪些属性,而不是指定要删除哪些属性。而且
delete
效率很低。那就去买吧
return res.send({
id: user._id,
cellphone: user.cellphone,
fullname: user.fullname,
gender: user.gender,
avatar: {
url: user.avatar.url,
likesCount: user.avatar.likesCount,
description: user.avatar.description
}
});
对于一些简化,请从以下方面了解该方法:
下面是一个将规范化对象属性的函数:
function normalizeObjectKeys(obj) {
let normilizedObj = {};
Object.keys(obj).map(key => {
let newKey = key.replace(/_+/, '');
normilizedObj[newKey] = ('object' !== typeof obj[key]) ? obj[key] : normalizeObjectKeys(obj[key]);
});
return normilizedObj;
}
例如:
normalizeObjectKeys({
"_id": "583c4e054c99d310f543b11e",
"cellphone": "123456",
"password": "$2a$10$d3SeD5CCzTo6wBR/4SGUu.i7vUvX98N1NlpBTwDdWCRrIYcVwWmCO",
"fullname": "some name",
"gender": "male",
"avatar": {
"_id": "583c4e054c99d310f543b11d",
"__v": 0,
"url": "https://pp.vk.me/c631525/v631525614/2b398/kbI5QohgEgQ.jpg",
"likesCount": 0,
"description": "Hey guys"
},
"__v": 0
});
下面是一个将规范化对象属性的函数:
function normalizeObjectKeys(obj) {
let normilizedObj = {};
Object.keys(obj).map(key => {
let newKey = key.replace(/_+/, '');
normilizedObj[newKey] = ('object' !== typeof obj[key]) ? obj[key] : normalizeObjectKeys(obj[key]);
});
return normilizedObj;
}
例如:
normalizeObjectKeys({
"_id": "583c4e054c99d310f543b11e",
"cellphone": "123456",
"password": "$2a$10$d3SeD5CCzTo6wBR/4SGUu.i7vUvX98N1NlpBTwDdWCRrIYcVwWmCO",
"fullname": "some name",
"gender": "male",
"avatar": {
"_id": "583c4e054c99d310f543b11d",
"__v": 0,
"url": "https://pp.vk.me/c631525/v631525614/2b398/kbI5QohgEgQ.jpg",
"likesCount": 0,
"description": "Hey guys"
},
"__v": 0
});
{…user.toObject(),}
无效ES6。{…user.toObject(),}
无效ES6。