How to view document fields in mongo shell?

Question

Is there a way to figure out the fields/keys in a document while in mongo\'s shell? As an example, let\'s say we have a document like (pseudocode):

{
    \"m         


        

Answer 1

Other answers are correct.

However, as I am completely new, I didn't understand where & how the above commands need to be executed.

Below helped, from my github.
On Windows: Run this code in a command prompt (cmd).
On Mac or Linux: Run this code in a terminal window.

// ------------
// start mongo client
mongo

// ------------

// list all databases
show dbs
// NOTE: assume one of the databases is myNewDatabase

// use the 'myNewDatabase' database
use myNewDatabase

// ------------

// show all collections of 'myNewDatabase' database
show collections
// NOTE: assume one of the collections is 'myCollection'

// show all documents of 'myCollection' collection
db.myCollection.find()

// ------------

// field keys
Object.keys(db.myCollection.findOne());

// values
db.myCollection.find().forEach(function(doc) {
    for (field in doc) {
        print(doc[field]);
    }
});

// ------------