Tagged Questions
15
votes
3answers
1k views
Converting an IP
I've written a DNS tool in Node and would like to know if there's a better and more efficient way of handling the conversion from an IP to a long. I'm not too good at bitwise just yet and would like ...
15
votes
0answers
1k views
How can this simple handler in NodeJS be improved? [closed]
I have a pretty simple script which I am running in NodeJS (v0.6.5) to handle requests for two different host names. The script sends back a different response based on the hostname of the request, ...
9
votes
1answer
196 views
node.js passport wrapper
I have started some experiments with node.js.
Any comment on style (especially the callbacks) and best practice is appreciated:
PassportControl.js
...
8
votes
1answer
86 views
Download a file and update the current downloaded percentage
I am not a big fan of JS, but have been forced to use it in this situation for various reasons.
My task: Download a URL to a target file, and update another part of the application with the current ...
8
votes
1answer
223 views
node.js Passport Wrapper 2
First attempt was done here:
My second attempt (now using jslint to make sure the spacing is correct and have incorporate the majority of the feedback from previous attempt).
...
7
votes
2answers
94 views
Handling packets in nodejs for MMORPG
Writing a MMORPG server in nodejs, I have to handle packets. These packets have a structure of
<length> <id> <data>
So what I did was use a ...
7
votes
2answers
143 views
Local user registration
More javascript (nodejs) to go with the passport wrapper I just posted:
UserBook.js
...
7
votes
2answers
167 views
Nodejs broker between mongodb and rabbitmq
I wrote a small program that aims to take some data from the mongodb database and put them in the rabbitmq queue.
I tried to use only promise style but I am a beginner in javascript.
Could you please ...
7
votes
1answer
252 views
node.js + Express code critique
I'm learning Node. I'm working on a personal project that uses Node + Express + Node-MySQL + Generic-Pool (for MySQL pooling). I am new to the idea of module.exports and I'm still grokking it.
The ...
7
votes
1answer
902 views
Nested template variable access in Meteor
I'm a brand new JavaScript guy (currently playing with Meteor) and would love some critique of the following:
The goal: I've got two collections
Buckets
Widgets.
I'm displaying a ...
6
votes
2answers
77 views
Is this the right way to work with callbacks and the EventEmitter?
I'm creating a small online multiplayer game in NodeJS and I'm wondering if I'm "doing it right".
Here is a bit of my code:
...
6
votes
3answers
224 views
Avoiding callback hell
Currently, the code below looks awful because of all the callbacks involved. How can I reduce the amount of nesting? Also, would you recommend the use of q or Async.js?
...
6
votes
1answer
129 views
5
votes
1answer
2k views
5
votes
1answer
59 views
Project Euler #41 - pandigital prime
I've written a solution to Euler 41:
We shall say that an n-digit number is pandigital if it makes use of
all the digits 1 to n exactly once. For example, 2143 is a 4-digit
pandigital and is ...
5
votes
2answers
111 views
A more efficient approach to existing JavaScript coding
I am now working on a Node.js project, and on my ejs view page, I'm retrieving this array of objects, like:
...
5
votes
1answer
602 views
Seeding MongoDB using Mongoose models
I'm using mongoose to seed a mongodb database based on my mongoose models.
I'm particular interested in improving the seed code.
I have two models, an article and a category.
The relationship between ...
5
votes
1answer
196 views
Express.js controller with Node.js style exports.methods
I have some Node/Express.js controllers which implement the exports.method Node module convention. This particular controller also has a few helper methods. The code works fine!
However, I'm a ...
5
votes
1answer
826 views
5
votes
1answer
364 views
Movable Square-Div with Web Sockets, ws module, Node.js, and jQueryUI [closed]
I'm trying to make a simple little program in Node to use as a code base from with to program my whole web app. However, it isn't exactly working as planned because I'm stuck.
I wanted it so that ...
4
votes
3answers
48 views
Building SQL from multiple combinations of query parameters
I have a node.js/express.js based REST application. In one GET service I am querying data based on different set of request parameters. I am looking for a better way to implement it.
...
4
votes
1answer
69 views
Reducing code duplication in a geometric function
Given a large bounding rectangle ("envelope"), a list of points, and a maximal aspect ratio, the goal is to find a rectangle within the envelope, whose aspect ratio is bounded within the given aspect ...
4
votes
1answer
103 views
How to refactor common methods that depend on local variables into a base class
I'm using Node.js and am creating some models for my different objects. This is a simplified version of what they look like at the moment.
...
4
votes
1answer
189 views
Modularize this node.js express server code for routes and session handlers?
I have express node.js server code using Passport. It receives a user to authenticate it and ...
4
votes
1answer
242 views
Node.js chat client
This is a chat using Node.js, socket.io and MongoDB for storage.
I'd appreciate any feedback on what can be improved. I understand that this allows for non-unique usernames to be used, and it's ...
4
votes
1answer
1k views
User management in Node.js
I have moved all my web-server code dealing with user management into a single Node.js module that I pasted below. I have spent time polishing it, and churned it through JSHint. I am generally happy ...
4
votes
1answer
65 views
Type / Constructor testing utilities
My argument sanitization lib has a byproduct which does some typechecking and constructor investigation. I'm unsure if I'm using the fastest / most efficient approach here.
What are your opinions? ...
4
votes
1answer
4k views
How to Optimize Merge of Two Objects That Include Arrays of Objects
I need to merge two objects in a code path that is going to be heavily used. The code works, but I am concerned it is not optimized enough for speed and I am looking for any suggestions to ...
4
votes
1answer
564 views
Where is the memory leak in this scraper?
This is a scraper written in coffee-script for nodeJS. It is run in an interval (set to 5 seconds here to dramtically show the leak). Somewhere this code leaks memory. I already tried nulling a few ...
4
votes
2answers
2k views
Async, callbacks, and closures — am I doing it right?
After having spent a month or two trying to learn JavaScript, especially functional programming, async, and closures, I finally get it. But I don't know if I'm writing elegant code... Specifically, ...
4
votes
1answer
213 views
Does this nodeunit test conform to best practices?
I have inherited a node-js project, and I am completely new to it. Fortunately, it is already covered by unit tests.
The class under test, FmsRescuers, has the ...
4
votes
1answer
166 views
My first implementation of mongoDB
I'm new to Code Review, my assumption is that it is a place I can get feedback on working code that I've built, I hope that is right.
This is my first implementation of mongoDB, much much more to ...
4
votes
1answer
92 views
Code and concept correctness with CSV writer in node
A friend of mine wanted an array to CSV string function for node, so I came up with this, basically it can take in a single object, a 2D array or an array of objects.
If the children or parent is an ...
4
votes
1answer
28 views
backbone.js boilerplate
I am currently experimenting with a backbone boilerplate application and would really appreciate some feedback or thoughts on its structure.
I come from a PHP background so am used to frameworks ...
3
votes
1answer
101 views
I'm torn between conditionals and abrupt return functions
Which one of these two is better?
This one:
...
3
votes
2answers
114 views
Calculate all possible combinations of an array of arrays or strings
I'm using code adapted from this Stack Overflow question to calculate all possible combinations from an array, which may contains strings.
For example:
...
3
votes
1answer
54 views
Generate [min, max] range from strings
I need to generate a minimum and maximum value for a range of speeds (slow, medium, fast), the user can specify any combination of the 3 values, and receive a range that encompasses all.
Given any ...
3
votes
2answers
57 views
Node exports, architecture
My project is written in node JS + Express and has the following architecture:
routes (e.g controllers)
models (stateless functional modules)
app
Models objects only doing SQL queries like this:
...
3
votes
1answer
61 views
My node app with valid syntax is failing silently, but not breaking. Infrastructure problem?
I built a simple Node app, and the code "works", with no failures, no syntax errors, and does not break, but one component doesn't work right. I showed a snippet on Stack Overflow, in this question, ...
3
votes
2answers
63 views
How deep should my nodejs closures be?
I am writing non-blocking code as it should be in node js. If I want run function A after B I do it using callback. But I find this style guide.
Right:
...
3
votes
1answer
279 views
node.js MVVM framework concept
Not sure how subjective this question is however I am looking for a peer review and general feedback on the intuitiveness and scaffolding potential of a framework concept. I have a gist on GitHub ...
3
votes
1answer
43 views
Optimize way of reading and writing file in node.js
I want to read the content of file then want to make few updates to content and then write that content to another file. I have created the code with node.js as follows.
...
3
votes
1answer
143 views
Recursively reading a directory in node.js
I made a function for recursively reading a directory and it just seems kind of long and complicated. If you could take a look and tell me what's good or bad about it, that would be great.
Reading ...
3
votes
1answer
62 views
Validate that a relative path exists or is an external URI
I sent a PR to a repo the other day and want to make sure I have the right idea for URI validation.
...
3
votes
1answer
669 views
Node.js Async Callback Hell
Attempting to create a final array with data pulled from 3 functions. The first two functions have all the data but then the 3rd function needs to run looping through one of the fields from function 2 ...
3
votes
2answers
125 views
Fibonacci using cache
This is my simple Fibonacci implementation in CoffeeScript. What do you think? Using cache (fibResults), it's very very fast.
...
3
votes
1answer
357 views
Is there a better way to enforce separation of concerns in this Node.js program?
I've been writing a node.js web crawler, to get it running, I've found myself having to string together really rather a lot of different npm modules.
I've done my best to keep the code DRY and well ...
3
votes
2answers
161 views
Node.js object-oriented controllers
I've been experimenting with the Express Node.js framework. On the face of it, the approach of passing functions to app.VERB methods seems unusual. In other ...
3
votes
1answer
112 views
JavaScript templating language: ivy-markup
This library is a markup parser which is intended to be used in node.js and browser environment. I've decided to use Jasmine for tests.
The library's name is ivy-markup. URL: ...
3
votes
1answer
536 views
Socket.io, Express and Delivering realtime data from backend socket
I've got server running to make serial data available on a TCP/IP port. My goal is to collect data coming from a realtime device connected to the serial port and deliver it to web clients connected to ...
