从Javascript对象中删除值(Remove value from Javascript object)

所以我从猫鼬那得到这个东西，这是一个用户。 我想删除哈希密码字段，但我似乎无法删除它。

试过以下几点：

apiRoutes.get('/user/:id', function(req, res, next) {
  User.findById(req.params.id, function(err, post) {
    if (err) return next(err);
    delete post['password'];
    res.json(post);
  });
});
 
 当我调试/ console.log它打印出密码的对象时，肯定有密码字段。 
 
 编辑：解决它通过传递选项到猫鼬调用： 
 
User.findById(req.params.id, '-password', function(err, post) { /* ... */ });
 
 但仍不能解释为什么删除不起作用？ 
So I have this object I get from mongoose, it's a user. I want to delete the hashed password field but I can't seem te remove it.
 
Tried the following:
 
apiRoutes.get('/user/:id', function(req, res, next) {
  User.findById(req.params.id, function(err, post) {
    if (err) return next(err);
    delete post['password'];
    res.json(post);
  });
});
 
There's definitely a password field there, when I debug/console.log the object it prints out the password.
 
EDIT: Solved it by passing an option to the mongoose call:
 
User.findById(req.params.id, '-password', function(err, post) { /* ... */ });
 
But still doesn't explain why delete doesn't work?
                
最满意答案
                
                    
                        
 它看起来像猫鼬返回的对象不是一个实际的JavaScript对象。 
 
 我必须将它转换为一个对象才能使用它的基本功能： 
 
apiRoutes.get('/user/:id', function (req, res, next) {
User.findById(req.params.id, function (err, post) {
    if (err) return next(err);
    post.toObject();
    delete post.password;
    res.json(post);
});
It seems like the object that mongoose returned wasn't an actual javascript object.
 
I had to convert it to an object in order to use basic functions on it:
 
apiRoutes.get('/user/:id', function (req, res, next) {
User.findById(req.params.id, function (err, post) {
    if (err) return next(err);
    post.toObject();
    delete post.password;
    res.json(post);
});