Questions tagged [node.js]
Node.js is an event based, asynchronous I/O framework that uses Google's V8 JavaScript engine. Node.js is commonly used for heavy client-server JavaScript applications.
919 questions
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Simple text adventure engine built in electron
I'm working on making a text adventure using Electron. I have the basics of the engine working, you can walk around an infinite map. Maps contain things, and you can enter a few basic commands. I'm ...
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NodeJS promise loop through all files in directory
I am trying to re-organise my mp3 collection based on its id3 meta data into folders based on the artist. I'm new to nodeJs and more importantly promises. I was hoping I could get some feedback on my ...
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Tiny REST API for making CRUD operations on list of posts
This is not a question related to a bug.I've just created a very tiny node.js/express API for education purposes.
I've created a very little ...
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New TV Episode Checker
My code checks if a new subbed episode of a TV show is out by checking the designated blog. The blogs url returns a json which is then parsed for episode number, direct video link, embed video link, ...
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Private desktop and mobile WebSocket connections with Node.js
Background info
To learn a new branch of my dev career, I've started a new project in my spare time (I've never used WebSockets before and I also want to learn more about common authentication flows). ...
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Online implementation of the game "Compatibility"
This is an online implementation of a game: Compatibility. You can find the rules here.
The idea is to have a browser that perform all the game's mechanics and to discuss with your friends through a ...
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MongoDB Filter between two dates
Simple code for getting documents that have a creationDate between two values in mongodb.
If the user provides only one of the values the code should still work and ...
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Catching Errors in Factory Method with express.js
My express.js application uses a lot of promises for interacting with a variety of services. Instead of including try/catch with each one, I've setup a fail safe factory method for all my express ...
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Send multiple REST requests at the same time. (node)
Below is a (very) simplified version of a function I made that creates multiple REST requests to gather needed information.
Things to note:
One of the REST calls is dependent upon the output of ...
- 1,590
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Take postcodes and get the Lat long information from them
I had an interview task which was the final stage, however, the feedback I got back for my solution was that it lacked effort and structure. I would be grateful to ...
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Way to delegate command to methods in different files
What I want to do is for an example command have it defined in its own file - e.g. command.js - and the same for the other methods. I want to make a separate file for every module - for example "...
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Finds customer who live within 100km and output them to a text file
I had an interview task where I had to output customers who live 100km within a particular latitude and longitude and then output them to a file with their username and ID. The customer file looks ...
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Array to map based on object property containing array items
If i have a object like following
...
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Node.js backend login logic
So I wrote a rather primitive login logic in Node.js, which authenticates the user and handles JWT. Is it any good in terms of security, efficiency, building, async/sync, logging. SECURITY is my main ...
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AJAX with Vanilla Node.js/JavaScript – POST JSON without a form
I am new to node.js, ajax, and asynchronous code. I’ve pieced together a working way to exchange json between browser and server and am wondering if someone with more experience considers the approach ...
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web scraper for emails and links
I created a class to scrape URLS, parse and validate emails and get internal links.
How can I achieve the SOLID principles in this class written in Javascript to make a web scraper?
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parse date and number from API results
I'm slurping up fields from an API that returns an array of fields. Each field in the array is a String that actually contains two separate fields (a number and a date). The number is enclosed in ...
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Send message and wait for receive while using async/await and promises the proper way
I have this working code, but sendAndReceive function looks ugly/smelly to me. Eslint complains about using await inside a loop, and using ...
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Sending HTML reports to a database project
So, I have been recently heavily focusing on Front-End, for data validation, showing errors etc. And a big thank you to CertainPerformance for many reviews hes done for me :)
I have created a Report ...
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Node.js package that retrieves data from an API, formats it and sends it out via email to a distribution list
I've created a Node.js package that retrieves data from Icinga (a monitoring platform), formats it and passes it off to a class that generates some HTML and then sends it all out as an email.
The ...
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Netlify plugin to generate CSP rules on the fly
The following code is a Node-based Netlify plugin to generate Content-Security-Policy rules based on inline styles and scripts.
Inputs
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Scalability of azure redis example
I built an auction site with a dynamic caching layer after I seeing how expensive a dbaas is. The site is now done, but like any site that grows, my caching solution grew too. The cache currently ...
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Improving Async/Await Javascript Code
I'm working on a data analytics dashboard in Node.js as a portfolio piece. I've built a pipeline that gets the data where it needs to be for more processing, however, I feel the below code can be ...
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Basic REST API for manipularing a MongoDB collection, using Node, Express, and Mongoose
I'm practicing back-end programming and NodeJS. As an exercise, I'm attempting to build a REST API for a MongoDB collection. I'm also learning to use the Express and Mongoose middle-wares, so that's ...
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function access variable in module.exports file in nodeJs [closed]
I would like to find the best way to access function variables that are being used as parameters in other functions in another module. The parsefile.js is a Node.js ...
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Node JS and Handlebars checking if records have been completed today
Goal:
Currently creating an application using Node JS and Handlebars.
I have a to do list set up in ...
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Is this nodejs web-application spaghetti code?
I recently interviewed for a backend developer role at a startup involved in financial products, as a 2020 grad. The take-home assignment they had me submit had a few basic goals and they recommended ...
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Javascript check if server time is greater than or less than 9am EST
I offer same day shipping if the user places an order before 9AM ET. If they place the order after 9AM, same day shipping is unavailable.
My server is using UTC time so I need to check if the time is ...
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Express compatible JSON Web Token authentication middleware
I am writing an Express.js middleware function in a TypeScript NodeJS project that uses a function from a third-party module to perform a small workload. When writing unit tests, I want to mock this ...
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Refactor class based approach in NodeJS
I am writing a lambda function to make a request and fetch data from API.
I am using as a class based approach which I think could refactor it and write in correct way.
May be we can change this class ...
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Serving a webpage that displays the HTTP request information sent by the client
In order to learn web server programming in Node and JavaScript, I decided to implement a simple web server that only does one thing:
Display data of the HTTP request as an HTML table.
The actual ...
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Converting duplicate JS code into a higher order function
I have a block of code that is re-used and I want to use functional programming to remove this duplication.
My code takes an array of items, splits the items into batches of 500 and then does some ...
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NODE JS Unlink and delete MySQL data
Here is my revised code from my other review question Node JS delete multiple MySQL linked records and delete physical file
Just would like to hear some reviews if I have the right logic.
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Handling Promise that resolves but returns a 404
This is in a node and express API. I'm trying to figure out the best way to handle Promises that resolve, but return a 404 response. I have a method which uses node-fetch to make a POST call to update ...
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d20pfsrd Discord Bot Scraper Abstraction and Deployment
I wrote a discord bot that listens for links to the d20pfsrd rulebook in discord chat, checks if they are feats or magic, and then scrapes the page, formats it, and spits it back into chat as ...
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Minimal, very simple, implementation of an HTTP server for static content, using only core node.js modules
To practice the very basics of node back-end, I'm implementing the most basic server possible for static content, using only the core node modules:
http
fs
path
With the following server ...
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Node JS delete multiple MySQL linked records and delete physical file
I have the following tables in MySQL:
...
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Accounting for floating point error when rounding
I have to implement some business logic that will round a number (typically a double) upwards. Given that this number comes from a third-party and I don't know how they come to calculate it I'm ...
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Nodejs async with express server
I use the following code which works as expected. The code uses open ID connect to login user. Because I'm pretty new to node and express, it will be great if I can ...
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Correctly using promises with node-mysql
I have been trying to do a simple query and return the results with node-mysql however I had several problems. Originally I wrote it where there was no promise, but ...
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Call multiple api endpoints in NodeJS
I am new in NodeJS and I try to write code based on tutorials I find online. I have a NodeJS app (based on Strapi) and an external API from a Cloud Servers provider. The process I follow is as:
Call ...
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GroupBy by nodeJS or ES6 of very nested JSON Objects with condition
The following code should return an array (flatFeatures) which will include feature.name and the most far subscription.expDate. for example if I have some subscriptions with the same features, the ...
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creating accounts with passportJs
I'm currently building an application using Passport and bcrypt for user authentication. I've created the registration part. Is there anything I could improve on? I'm still getting the hang of writing ...
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(Improved) get-release npm module
Improved version of the original question
I've created a simple npm module and CLI program to get the latest GitHub and Bitbucket release from their APIs using Node.js. Please tell me if there's ...
user191336
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get-release npm module
Solved, question with improved code
I've created a simple npm module and CLI program to get the latest GitHub and Bitbucket release from their APIs using Node.js. Please tell me if there's anything to ...
user191336
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Node JS Express - Temperature records
Goal:
I have thought of a project to create and came up with this goal of: "To record temperatures for different Fridges or Freezers."
Current situation
I have a working method to get data ...
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Single Producer/Multiple Consumers in Node
I've done my best to contrive an example of the problem I'm trying to simplify. I have a pool of workers, and each worker can do several tasks at a time. Each task takes an unspecified amount of time. ...
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A Firebase Uploader CLI
I built this code as part of a test project that was given to me by a company. They had given me a .csv file that contained over 9000 records and wanted me to build a program that would upload it to ...
