我得到错误未捕获的异常:TypeError:doc.addresses.append不是函数

Question

我有一个这样的结构：

_id: ObjectId("3c4b1475238d3b4dd5000001"),
username: "kris",
addresses: 
[
{
name: "home",
street: "123 Some Ave",
city: "Cul City",
state: "CA",
zip: 12345
},
{
name: "work",
street: "1234 Sea Blvd",
city: "Cul City",
state: "CA",
zip: 54321
}
]

我正在努力做到这一点：

UID=ObjectId("3c4b1475238d3b4dd5000001")
doc=db.users.findOne({_id: UID})
new_address={name:'work', street:'17w. 18th St', city: 'New York', state:'NY', zip:10011}
doc['addresses'].append(new_address)

但我得到了这个错误：未捕获的异常：TypeError:doc.addresses.append不是函数：我该如何解决它？

Answer 1

要附加到数组的正确javascript方法是push。

所以，不是：

doc['addresses'].append(new_address)

用途：

doc['addresses'].push(new_address)