您可以在 require('mongoose').Types 上找到 ObjectId 构造函数.下面是一个例子:

You can find the ObjectId constructor on require('mongoose').Types. Here is an example:

var mongoose = require('mongoose');
var id = mongoose.Types.ObjectId();

id 是新生成的ObjectId.

注意:作为 Joshua Sherman 指出，对于 Mongoose 6，您必须在调用前加上 new:

Note: As Joshua Sherman points out, with Mongoose 6 you must prefix the call with new:

var id = new mongoose.Types.ObjectId();

您可以在 Mongoose#Types 文档中阅读有关 Types 对象的更多信息.

You can read more about the Types object at Mongoose#Types documentation.