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Node.js Recipes Blog
Node.js Recipes are structured in a Cookbook format featuring recipes that contain problem statements and solutions. A detailed explanation follows each problem statement of the recipe. This is usually contained within the solution; however, an optional discussion section can often contain other useful information helping to demonstrate how the solution works.
2020-02-15 16:32
Node.js vs Async/await in .net Problem Can someone explain/ redirect me, what is the difference between Node.js's async model(non blocking thread) vs any other language for example c#'s asy… Read More
2020-02-15 10:27
Swap/Dump session data using passport.js Problem I am using Passport for my MEAN stack-based app, that makes use of several APIs that require several OAuth tokens. Because logging in and ou… Read More
2020-02-15 09:29
Weird Node js error Problem I am not much familiar with node js, but I was forced to use node js to launch on heroku. It all went smoothly, probably until a few days ago, but I didn't know… Read More
2020-02-15 08:29
Node js dynamic images- error Problem This piece of code is used to create dynamic images based on the height and width parameters set ..Say localhost:3000/50/50 would give an image of widt… Read More
2020-02-15 03:25
Why doesn't this data display? Problem I have the following JSON object: { user: { city: 'San Francisco', country: 'US', displayName: 'Bernard'… Read More
2020-02-15 00:26
How to remove subdocument in mongoose? Problem i have a collection which have many document each of which have a subdocument array comment : { _id : ObjectId name : String, comments… Read More
2020-02-14 23:29
Neo4j in Azure mobile services Problem I have been trying to use a Neo4j database as my database in an Azure Mobile service. I was following this tutorial and I cant seem to get it to work… Read More
2020-02-14 20:32
Requiring a folder with index.js Problem I'm trying to require a folder with index.js by specifying a folder name import xyz = require("./xyz"); and get a compilation error "Unable to re… Read More
2020-02-14 19:26
Cannot loop MongoDB Collection Functions Problem For some reason, I cannot loop collection.count. It keeps printing filename[5] 5 times instead of starting at 1 and going to 5. This make… Read More
2020-02-14 17:25
Javascript equivalents in V8? Problem I'm playing with NodeJS and V8 in an attempt to learn both. I'd like to translate this simple JS line in C++. global.Game = { sleep: call_some_CPP_fu… Read More
2020-02-14 14:31
Using in multi files Problem I am using Node.js Express with //app.js var server = http.createServer(app).listen(app.get('port'), function(){ console.log('Express se… Read More
2020-02-14 13:32
intel XDK directory browsing Problem I'm trying to get a way to reach and parse all JSON file from a directory, witch inside an Intel Xdk project. All files in my case stored in '/cards' fo… Read More
2020-02-14 10:32
ENV Variable Equivalent in Javascript Problem Before you flame me, I've done my research (Javascript ENV variables). I know that it is not possible to access system environment variables u… Read More
2020-02-14 09:25
Node.js sending http request in a loop Problem I'm actually facing a problem with my javascript code executed with node.js i need to send http requests in a loop to a distant server (i set… Read More
2020-02-14 08:25
find file with wild card matching Problem In node.js, can I list files with wild card matching like fs.readdirSync('C:/tmp/*.csv')? I did not find the information on wild card matching… Read More
2020-02-14 04:26
Cannot GET / Nodejs Error Problem I'm using the tutorial found here: and added the following code. // Module d… Read More
How To Add Dates To Pm2 Error Logs?
2020-02-14 03:31
How to add dates to pm2 error logs? Problem Is there a way to add timestamps to error logs in .pm2/logs? I noticed that pm2 logs command shows aggregated logs with timestamps, but looking… Read More
2020-02-13 20:25
node.js login with passport Problem I am implementing a basic login system with passport but I keep receiving this error when I login with the correct credentials: Express 500 TypeError: C… Read More
2020-02-13 17:26
Nodejs use method in view Problem For example,In my Nodejs app,I have a router: exports.test=function(req,res){ res.render('./admin/test.jade',{html:[a,b,c]); } And I have Underscore… Read More
2020-02-13 15:30
Sending Tree Structure in Node.js Problem I'm using the Arboreal library to send a tree structure to the frontend. However, I'm running into the issue of TypeError: Converting circular stru… Read More
2020-02-13 13:30
Accessing posted form data in node/express Problem I am working on a small JS application using node and expressto graph user data that is input with a form and then posted. So far I've go… Read More
2020-02-13 11:27
Avoid forced callbacks Problem I have a mongoose database query var player; Users.findById(req.user._id,function(err,user){ console.log('>>> user: '+user); //----2 p… Read More
2020-02-13 10:28
Implementing callbacks in my own modules Problem I have an problem and I guess the solution is using callbacks. But I'm not sure how. When starting node.js the following code gets called:… Read More
2020-02-13 05:32
Node.js open chrome in full screen Problem I have to open google chrome to a specific page after the server, written in Node.js, is ready. To do this I've used this code: var open = requir… Read More
2020-02-12 23:29
response.json() rendering old variable Problem I have a simple JSON API which for some reason is rendering another value than what console.log is reporting that the value has. My route: a… Read More
2020-02-12 19:30
Display data inside input value using Jade Problem I'm fairly new to Jade and am wanting to display some outputted data as the value value of a text input. Like this: input(type="text", na… Read More
2020-02-12 17:30
'Condtions hell' in node js Problem I have two layers in my application(express), first is module with function which is handling database queries, fs , and so on. Second is handling reques… Read More
2020-02-12 16:25
node.js code to append data to a file Problem How can I append data to a file using node.js I already have a file named myfile.json with data. I want to check if the file name exists and t… Read More
2020-02-12 14:31
Nodeclipse + nodemon error Problem When I try to run an express app in nodeclipse, it gives me the error, 23 Jan 11:58:04 - [33m[nodemon] v1.0.13[39m 23 Jan 11:58:04 - [33m[nodemon… Read More
2020-02-12 13:29
Bluebird, promises and then() Problem I've been only using bluebird for a few days but I want to go over all my old code and promisify it :) My problem is that I still don't fully grasp th… Read More
2020-02-12 10:32
Node.js keeps hanging/loading on localhost Problem I'm following this beginner node.js tutorial ( and… Read More
2020-02-12 08:29
Android Socket client node js server Problem I am creating an android client using socket not by and node js is the server. I need to know answers for this. 1.It is possible t… Read More
2020-02-12 07:32
Sailsjs change localization Problem I've been using Sails.js for quite some time and was wondering if there is a way to manually change the localization from the controllers depending on th… Read More
2020-02-12 04:29
Make 2 async queries with node js Problem so I want to display a table with all the "room" in my database, I also want to show the creator of the room but only the id of the user is stocked… Read More
2020-02-10 14:25
How to reuse variables in Mocha tests? Problem In my mocha tests I always require the same libs. For example: var mongoose = require('mongoose'), User = mongoose.model('User'), _ = req… Read More
2020-02-10 12:28
Parsing a JSON API in Node Problem I'm building a node wrapper for an external API and am having issues parsing the JSON response. The following code makes the request: https = require "ht… Read More
2020-02-10 11:33
Mongoose, where do I define the model Problem I am building my first node/express/mongoose application. I am stuck on this error: 500 ReferenceError: ServerModel is not defined Below is t… Read More
2020-02-10 10:30
Can node.js detect when it is closed? Problem I want to know if it is possible to detect when a node.js process is closed through clicking the 'X' on Windows. If so then how. I have tried p… Read More
2020-02-10 09:27
Evented api and/or callback api in nodejs Problem I would like to know what is the best way to handle an evented api. My first thought is wrapping it into a callback api but I have feeling… Read More Error: Listen EADDRINUSE
2020-02-10 06:31 Error: listen EADDRINUSE Problem I have a small problem. I want to run a webserver and allow it to communicate with server using but i get: POST UPDATE Chat Class:… Read More

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