node.js - What does err and doc mean in cursor.toArray(function(err, docs){})? -


this official mongodb documentation.

toarray cursor.toarray(function(err, docs){}) converts cursor object array of matching records. convenient way retrieve results careful large datasets every record loaded memory.

collection.find().toarray(function(err, docs){     console.log("retrieved records:");     console.log(docs); });

what err , doc mean in cursor.toarray(function(err, docs){})?

docs array documents returned cursor.

when there error, err object describes error.


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