Mongodb instanceof and typeof cannot be used in the shell

Working with Data Developer Tools
1

How to use it? It cannot be used as a command alone, db.coll._id instanceof ObjectId will be equal to false, and the document will return true. And typeof returns undefined, no, so how do you use these two operations to operate ni?

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2

Hi @111117,

Welcome to MongoDB community!

I think it needs to be operated on a variable:

var mydoc = db.coll.findOne();
typeof mydoc._id

Thanks
Pavel

3

Okay thank you :grinning:

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