Why do I get undefined when trying to find out any information about an array?

Question

MongoDB

Hello. I'm trying to find out from the database if there is a record with a certain field in the database or not.

var unique = collection.find({email: '[email protected]'}).toArray();

I want to say right away that there are a whole bunch of such records. If I want to output unique to the console, then I get all records with the given email. If I want to know the length of the array through unique.length ( https://docs.mongodb.com/manual/reference/method/c... , then it gives out undefined. Also, I get undefined if I want to display information about any of the array elements What am I doing wrong?