CODEWITHSUNDEEP
node.js
Anshu Kumar
Anshu Kumar

Reputation: 13

Nodejs each and foreach loop

What is each and forEach loop in Nodejs? I am getting my output using each but facing problem using forEach.

var MongoClient=require("mongodb").MongoClient;
var url="mongodb://localhost:27017/"
MongoClient.connect(url,function(err,db){
    if(err){throw err}
    var dbo=db.db("NewDataBase");
    var pointer=dbo.collection("Collection").find();

    pointer.each(function(err,doc){        
        if(err)throw err;
        console.log(doc);
    })
db.close();
});

Upvotes: 1

Views: 132

Answers (1)

Ankit Agarwal
Ankit Agarwal

Reputation: 30739

pointer is actually a reference to a cursor which you get from the query dbo.collection("Collection").find();. And the cursor holds the set of result documents it get from that query. To access those documents you use each() and not forEach(). This is also because the forEach() is a prototype function of Array type data structure but pointer is a cursor type data structure so you cannot use that in this case.

Upvotes: 1

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