How to query based on _id in nodejs mongodb

Question

It is not possible to refer to the methods on the Internet.

var ObjectId = require('mongodb').ObjectID;
let _id = ObjectId(_id);
this.collection.findOne({_id:_id}, {}, function(err, doc) {
    console.log(err, doc);
});

I couldn’t find it after looking through the documents, mainly

"_id" : ObjectId("5927e105681b8b8fdb7887b9"),

The types may be different and cannot be queried. Please let me know if you know.

Answer 1

A classmate has asked this question, and it is the same as what you encountered;

var ObjectId = require('mongodb').ObjectID; //Does not work

var ObjectId = require('mongodb').ObjectId; //Work

Please refer to the official documentation.

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