MongoDB - How can I get the size of a collection using Node.js? -


i'm writing server side code using node.js, i'm trying mongodb collection size using count method not working.

this code

var mongo = require('mongodb'); var host =  "127.0.0.1"; var port = mongo.connection.default_port;  function getstock(name, callback) {      var db = new mongo.db("testdb", new mongo.server(host, port, {}));     db.open (function(error){         console.log("we connected! " + host + ":" +port);          db.collection("stocks", function(error, collection){             console.log("we have collection");             **var numofdocs = db.collection('stocks').count()**             **console.log("the num of  docs in our collection is: ",numofdocs)**             collection.find({"name":name.tostring()}, function(error, cursor) {                 cursor.toarray(function(error, stocks) {                     if (stocks.length==0) {                         //console.log("no stocks found!");                         callback(false);                     }                     else {                         callback(stocks[0]);                         //console.log("found stock -> ",stocks[0]);                     }                 });             });           });     }); }

.count() asynchronous function, .find() is.

try following code:

collection.count({}, function(error, numofdocs) {     console.log('i have '+numofdocs+' documents in collection');     // .. });

the first argument .count() should search query. since want count documents, i'm passing empty object {} search query.


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