Javascript Object.create()未完全创建;
代码如下:Javascript Object.create()未完全创建;,javascript,node.js,object,Javascript,Node.js,Object,代码如下: //Note: x actually isn't defined, I'm pulling it from an external source var x = [{ name: 'Michael Lovesllamas Lankford', created: 1338420951.11, laptop: 'pc', laptop_version: null, userid: '4fc6aed7eb35c14ad6000057', acl: 0, fans: 1, p
//Note: x actually isn't defined, I'm pulling it from an external source
var x = [{ name: 'Michael Lovesllamas Lankford',
created: 1338420951.11,
laptop: 'pc',
laptop_version: null,
userid: '4fc6aed7eb35c14ad6000057',
acl: 0,
fans: 1,
points: 5,
avatarid: 34 }]
global.UserBase = {
userid: -1,
name: "noidea",
isSuperUser: false,
isDJ: false,
laptop: "pc",
afkWarned: false,
afkTime: Date.now(),
droppedTime: null,
droppedRoom: null,
songCount: 0,
mWaitingSongLimit: 0,
totalSongCount: 0,
totalHeartCount: 0,
totalHeartsGiven: 0,
customGreeting: null,
bootAfterSong: false,
joinedTime: Date.now(),
whiteList: false,
allowedToReserveSpot: true
};
global.mUsers = {length:0};
global.Register = function(a) {
for(var i = 0; i < a.length; i++) {
var sUser = a[i];
mUsers[sUser.userid] = CreateUser(sUser);
mUsers.length++;
}
};
global.CreateUser = function(a) {
var b = Object.create(UserBase);
b.userid = a.userid;
b.name = a.name;
b.laptop = a.laptop;
if (a.acl > 0) b.isSuperUser = true;
return b;
};
Register(x);
它变成这样:
'4fc6aed7eb35c14ad6000057': {
userid: '4fc6aed7eb35c14ad6000057',
name: 'Michael Lovesllamas Lankford',
laptop: 'pc'
}
知道为什么UserBase中的其余值没有添加到对象中吗?
UserBase
位于global
对象上,您需要调用Register
位于global
对象上
global.CreateUser = function(a) {
var b = Object.create(this.UserBase);
b.userid = a.userid;
b.name = a.name;
b.laptop = a.laptop;
if (a.acl > 0) b.isSuperUser = true;
return b;
};
global.Register(x);
发生这种情况是因为您仅初始化 用户ID, 姓名和笔记本电脑。 查看您的代码:
b.userid = a.userid;
b.name = a.name;
b.laptop = a.laptop;
要获得所需的结果,需要调用Global.Register(x)而不是Register(x)创建一个新对象,并将其原型设置为传入的对象
您的对象正在初始化,但您只在新对象实例上显式设置了一些属性。原型对象(UserBase
)的属性都可以访问,但是对象的直接控制台.log
不会打印它们
例如,运行代码后,执行以下操作:
for(var p in mUsers['4fc6aed7eb35c14ad6000057']) {
console.log(p, mUsers['4fc6aed7eb35c14ad6000057'][p]);
}
打印出:
userid 4fc6aed7eb35c14ad6000057
name Michael Lovesllamas Lankford
laptop pc
isSuperUser false
isDJ false
afkWarned false
afkTime 1340089066700
droppedTime null
droppedRoom null
songCount 0
mWaitingSongLimit 0
totalSongCount 0
totalHeartCount 0
totalHeartsGiven 0
customGreeting null
bootAfterSong false
joinedTime 1340089066700
whiteList false
allowedToReserveSpot true
好的,我刚测试过,它成功了。我真傻。但是,我仍然可以通过mUsers[var]访问它吗?例如,songCount?我想知道如果我把它保存到数据库,它将如何工作。(我使用couchdb存储这些对象)是的,您可以直接访问属性。尝试调用对象上的JSON.stringify
,这可能就是您用来访问couchdb的任何东西都会用到的;b、 userid=userid;等等谢谢你的帮助!
userid 4fc6aed7eb35c14ad6000057
name Michael Lovesllamas Lankford
laptop pc
isSuperUser false
isDJ false
afkWarned false
afkTime 1340089066700
droppedTime null
droppedRoom null
songCount 0
mWaitingSongLimit 0
totalSongCount 0
totalHeartCount 0
totalHeartsGiven 0
customGreeting null
bootAfterSong false
joinedTime 1340089066700
whiteList false
allowedToReserveSpot true