Questions tagged [coffeescript]

CoffeeScript is a little language that compiles into JavaScript. Underneath all of those embarrassing braces and semicolons, JavaScript has always had a gorgeous object model at its heart. CoffeeScript is an attempt to expose the good parts of JavaScript in a simple way.

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1answer
421 views

Converting Date object in CoffeeScript to string (with a weird format)

I'm trying to convert a Date object into a weird format, like so: 03/30/2017 11:37:14:082 -0500 The issue that really trips me up is the timezone offset. There's ...
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1answer
68 views

CoffeeScript 2 + 2 program

I tested this program on Smooth-CoffeeScript I just wanted to have as many eyes on this as I could to learn about coffeescript; Is there anything I should do to improve it? Am I using the tools ...
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1answer
188 views

Displaying job status in a jQuery Datatable

I was wondering if there was a better way to write this: ...
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1answer
35 views

Abstracting out two lines of code in Coffeescript

I am currently working on refactoring two methods that exist in directives into a service. This is method one: ...
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30 views

Refactoring two similar methods into a single Angular service

I am trying to create a service for two similar-but-still different methods: Method one is this: ...
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1answer
39 views

Multiple string interpolation

Mostly robocop and hound give "line is too long" for such code statements. I just wanted to know which one is better and preferable way. This one is a way to avoid making the message long so just do ...
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50 views

jQuery Mobile Menu plugin

I would like some opinions on this Mobile Menu plugin I wrote for work. We develop custom WordPress themes, nothing too advanced or anything. I would like if anyone could just take a look and provide ...
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1answer
153 views

Loading an SVG into the canvas

The code below is loading an svg into the canvas via RaphaelJS. There are mouseover/mouseout events, on click on an element of the svg, and drag/zoom. I would like to know, what are some good ...
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0answers
66 views

Hotel Room Problem in CoffeeScript

Question: You're in a hotel and you forgot what room number you were in but remember that the sum of it's divisors is greater than the number, yet there is no subset of those divisors that add up to ...
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56 views

Idle game code optimization

I am currently making an idle game, and I currently have a few issues about optimization that I want to fix (which I will list at the end). But first, the code: main.coffee ...
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0answers
38 views

Backbone.model based state machine

I have created a class to keep track of some internal states. You can see it as a very simple implementation of a state machine ...
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0answers
48 views

Recursively merge objects with corresponding property names

I have such objects that I need to merge: ...
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1answer
721 views

Configuring a DataTable using CoffeeScript

I am working on a simple Rails app. For the Expense resource I use a DataTable. So, in my CoffeeScript for this resource I basically do several things: initialize ...
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29 views

Better way to template in simple coffee script

I am looking to see if there is a better way to refactor the creatMessage such that the logic of identifying message elements is outside the actual message ...
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1answer
83 views

Kruskal's algorithm

I'm working through Coffeescript implementing simple algorithms (started with Prim's as reviewed in this previous post) and wrote out Kruskal's algorithm as below, with a few helper functions. I'd ...
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1answer
158 views

Operating on a list of files using recursion

I'm starting just now with CoffeeScript and I found out that I can't solve problems like looping and recursives with just one line. I would like to improve the code that I just wrote using built-in ...
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3answers
89 views

Prim's algorithm in CoffeeScript

I'm just starting to learn CoffeeScript and am trying to work through simple examples, this one being Prim's algorithm. I'd like feedback on everything but especially on making this script take ...
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0answers
46 views

Using Angular directives for connect HTML clicks in buttons and controller actions

I'm trying to improve my Angular directive. I'm pretty new to CoffeeScript, so I think there may be inconsistent code. ...
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0answers
275 views

Optimizing redis cache

I am new to Express so I'd like to clear my code. This is Express with Redis support. I am getting someId and then I am searching it on Redis or using scraper which ...
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0answers
44 views

Search Class with Static Methods

Most of my programming experience is in PHP, and I have always been a bit wary of JavaScript. I have a JavaScript class to manage executing, caching and displaying search results. ...
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70 views

Multiple select widget in CoffeeScript

I created a widget to handle multiple selections in CoffeeScript. There's a working attached snippet that uses the compiled JavaScript (Stack Snippets don't support CoffeeScript), which is available ...
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1answer
65 views

Merge values of the objects properties with the same name into array

I have such input: [ { name: 'timezone', value: 'EST' }, { name: 'interval', value: 'day' }, { name: 'metrics[]', value: 1}, { name: 'metrics[]', value: 2} ] ...
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0answers
672 views

Passing functions using higher order components in React

After reading this, I'm on board, however it doesn't get into passing methods from the parent class. In my mixins right now I have a lot of helper functions that are used across the various components ...
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1answer
32 views

Extracting a list of hyperlinks [closed]

I need to produce a list objCollector with some results: ...
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0answers
65 views

Correcting a quiz

I wrote this code that's supposed to correct quizzes on a webpage, but it feels bloated and I'm sure there's tons of ways to improve it. Any thoughts? ...
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2answers
670 views

HTML5 Video player

I do HTML5 Video player with some controls. I have a button, where I change classname for make play, pause or replay button. I have a mute/unmute button, volume range slider, timer and fullscreen mode ...
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0answers
33 views

Extend a rethinkdb query, with `if`s

I have something roughly like this: ...
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0answers
770 views

Click interceptor directive

I needed a simple way to add this test to certain click events: if isUser then fireClickEvent else openSignInModal So I made this directive: ...
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0answers
380 views

Resource that use two different services and query with pagination when resolved

I'm learning Angular and I don't like my current approach. The current controller uses first Geolocation service and when ...
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1answer
134 views

Wait for all resources to be loaded

In my application I need some resources to be loaded and I have services to load each of them and then I need some point to know that all requests finished. First thought was to use $q.all with array ...
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1answer
6k views

Regex for curly quotes and apostrophes

After years of fear and procrastination I decided to learn regular expressions. This is the result: CoffeScript: ...
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2answers
341 views

Periodic Table generator

I've been playing around with Jekyll and CoffeeScript the last few days and made a Periodic Table to learn those two. Now, to create the Periodic Table, I take an array of ...
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1answer
838 views

AngularJS Login Check

I have states that have a requiredlogin object set as true, then I have Angular listen on ...
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1answer
153 views

Flood game implementation

There is the implementation of flood game on my GitHub. The app.coffee is the main part of project: ...
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1answer
109 views

CSV lookup problem solved with CoffeeScript

Source code with some test: ...
4
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2answers
607 views

Get <TH> texts into a tab separated string

table_with_headers = $(this.dom.table).find("thead tr th").map(-> $(this).text() ).get().join("\t") Can one write it nicer? I especially don't like the inner ...
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1answer
185 views

English-Russian irregular words tester

Could you please offer some suggestions about my self learning project? It is really hard-coded, but I have no idea what to do next. I'm using angular (only few ...
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0answers
363 views

RESTful API parsing DBF data HSET in Redis

I have this working code, but would like your review: sync.coffe ...
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1answer
83 views

Conditional AND statement- which is more readable? [closed]

Does this function automationStatusIsSuccessful = (data) -> data.Automation.Status isnt "FAILED" and data.Automation.Status isnt "COMPLETEDWITHERROR"` ...
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1answer
79 views

Function with underscore overuse

The code below is converting: data from one format to another ...
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1answer
1k views

Refactor Coffee Script to fire on page load instead of change

I have a Rails app where I'm trying to select a list of facilities based on what region is selected in a form. So far, I've implemented group_collection_select to do this as well as a bit of ...
2
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1answer
625 views

NodeJS conditional request before the real request

In my code I have to login a user with username and password. But if the user sends his e-mail instead of his username, I have to resolve it with another request. This is what the code looks like: <...
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1answer
639 views

Generating Passwords with a Secure PRNG

What's the best way to approach generating a password using a secure prng? In Python, I could simply use os.urandom. Any suggestions on this? ...
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2answers
91 views

Mathematical boundaries (audio meter)

I've just been putting together an audio meter by stacking bootstrap progress bars, and thought there was probably a better way, mathematically / logically, of achieving this. ...
5
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1answer
59 views

Tick module for the game

I tried to look up and suck in most of the information about optimizing this operation and this is what I came up with. As it's pretty much core of the game, I really would like to have it performant ...
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1answer
84 views

Navigating around ul li and looking for the active state on the current slide

How can I rewrite this in a simpler way? ...
3
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1answer
112 views

Automatically gravitate popover towards page center

I've authored a couple of plugins which show popovers on a given element. One of the objectives for both was no specification of plugin direction. So instead of the implementing dev having to specify <...
3
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0answers
200 views

Create component with select+button

I'm new to ReactJs and trying to figure out the preferred style. I also have tried it enough to realize that I'm not a fan of jsx and prefer how React looks when written in coffeescript. This is a ...
3
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1answer
65 views

Set up event on class and initialize state [closed]

Very similar to this question, I'm curious about common patterns/best practices for handling events in coffeescript classes, particularly when you also need to call the event handlers immediately to ...
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1answer
249 views

Ruby on Rails text editor

I'm currently building a text editor using contenteditable and RoR back end. As the editor is WYSIWYG and trying to follow DRY, I used only one file to 3 actions: Show, Edit and New. Edit and new ...