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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2
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28 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 ...
1
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1answer
27 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
41 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
votes
0answers
65 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
votes
1answer
35 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 ...
3
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0answers
93 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 ...
3
votes
1answer
50 views

Resize renderer on browser window size change

For a game, there is some WebGLRenderer object that wraps around canvas element. There is need to update it's size when browser window size changes. Here goes my current code written using BaconJS. ...
4
votes
2answers
63 views

Initializing events on class

I wrote a simple class that substitutes all file inputs in an HTML for a more complex template and set some actions on it. The code is rather small, but I'm not used to write JavaScript. I wonder if ...
1
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1answer
25 views

Implementing a Simple “MoneyAccount” in CoffeeScript

Please critique this CoffeeScript code. Is it idiomatic? ...
2
votes
1answer
36 views

Cleaner Way to Test for Types?

I defined a function that multiplies its argument by 3: coffee> foo = (x) -> x * 3 [Function] We can call it with an input of 1: ...
6
votes
2answers
93 views

Optimize CoffeeScript comparison function

I've wrote this CoffeScript function to compare values in a table, but it turned out to be a HUGE function. Since the code is really really long, you can find it here as well. Code explanation: The ...
1
vote
1answer
74 views

Multiple search filter like the one in freshdesk in rails

I have requirement to apply multiple filters on database. So I am doing this now. I will have multiple conditions in the front end where the user can select the conditions he wants to filter with and ...
2
votes
0answers
638 views

An Object-Oriented Programming pattern for AngularJS models using CoffeeScript classes

Over the past week, we tried to make our AngularJS model layer more powerful and reduce complexity in our controllers and template by using the object-oriented programming pattern and the CoffeeScript ...
0
votes
2answers
74 views

Promises and chained calls

I've realized JS callback hell and I started looking into Promises libraries. After reading some articles I decided to start with BluebirdJS. I didn't realise how to properly use them yet, because ...
7
votes
5answers
338 views

Avoiding nested conditionals and comparing strings

I have a web page with a set of icons that are grey by default: If a user clicks one, it toggles green (.toggleClass('green')): If a user clicks a green one, ...
1
vote
1answer
39 views

Remove nodejs/browser specific code in library

I'm the maintainer of the following library on github: https://github.com/edi9999/docxtemplater/blob/master/coffee/docxgen.coffee I want to maintain a library that works on node and in the browser, ...
10
votes
1answer
140 views

Tabbed navigation to hide and show pages

I'm new to jQuery and trying to learn how to refactor my bloated code to make it nicer and better maintainable. I have a tabbed navigation which I'm using jQuery to hide and show pages depending on ...
4
votes
1answer
45 views

Refactor array for loop result

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8
votes
1answer
145 views

Simple CoffeeScript navigation menu

I'm using simple script to handle tab menu like this: HTML: ...
0
votes
0answers
30 views

Saving on a Backbone Collection

I am currently building a backbone view where there is a mutli select feature. Once the user selects all the records, the user hits the submit and sends all the updated models. How does this mass ...
0
votes
0answers
66 views

Currying options for Bootstrap components for use in Meteor

Bootstrap 3 helper (redacted) for displaying alerts. ...
1
vote
1answer
220 views

Inheritance in angular directive with coffeescript

Here is my solution: ...
2
votes
1answer
77 views

Backbone subviews with non-uniform layout

I have a “featured projects” view that requires its subviews conform to a non-uniform grid: one narrow column with 3 items, then one wide column with 2 items, followed by another narrow column with 3 ...
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1answer
233 views

How to improve or refactor Backbone CoffeeScript code?

how can I improve the following code mainly regarding the router, when to initialize the and fetch the collection and how I can filter the models?= Thank you ...
3
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2answers
76 views

How can I remove DRY violations from this event handling code?

I've got a bunch of event handlers that follow this pattern: ...
0
votes
0answers
65 views

Improvements to my binary tree written in CoffeeScript

This is my attempt at a binary tree. I'm using it only for ordering a LDAP user list. My need is for storing multiple objects, so this tree is limited to leaves that are objects (see ...
3
votes
1answer
93 views

How to refactor this series of JavaScript promises?

This is part of a class for paginating a Backbone collection. The paginateTo method is for paginating to a model id. It returns the model if it's already in the ...
2
votes
0answers
91 views

node.js Review Core class of a Javascript framework for SPA's

A few years ago I started building a tiny (~300 SLOC) JavaScript framework for scalable and maintainable Single-Page-Applications written in CoffeeScript: https://github.com/flosse/scaleApp and ...
4
votes
2answers
152 views

isRTL.coffee - A JavaScript Library to determine if a text is of Right To Left direction

I just wrote this tiny library called isRTL.coffee to determine the direction of the text. Is there any better way of doing this? original code: ...
3
votes
2answers
129 views

Fibonacci using cache

This is my simple Fibonacci implementation in CoffeeScript. What do you think? Using cache (fibResults), it's very very fast. ...
1
vote
0answers
283 views

Handling multiple Mongodb connections in Node.js (using Mongolia)

I have a situation where I have multiple objects that each needs to connect to a different mongodb uri. I am currently testing this using mongolia but the concept should be the same if I were to use ...
2
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2answers
611 views
0
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1answer
102 views

Coffeescript Review

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1
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1answer
145 views

CoffeeScript: multiple changes of scope and big if/else

I just wrote this, and cleaned it up as much as I could. A couple things worry me. I change the scope of $(this) twice (and apparently don't know how to use ...
2
votes
1answer
257 views

Coffeescript Operators: use &&, ||, etc., or keyword operators?

I often use js2coffee.heroku.com to help me convert JS to CoffeeScript. Here was a line of JS I was converting. ...
2
votes
3answers
1k views

Function Is target String found in an Array of Strings in CoffeeScript

I wrote this simple function in CoffeeScript to see if elements are found in an array. ...
-1
votes
1answer
2k views

Coffeescript nested if's

y = (if @projectionStyle is 'flat' then 0 else if d3.event.y < -90 -90 else if d3.event.y > 90 90 else d3.event.y) This is working now, but I ...
0
votes
1answer
331 views

Express, blade with connect-assets

I have this CoffeeScript code running here (with TZM-Blade) and would like to have your opinion on how to better optimize it. ...
1
vote
1answer
496 views

coffeescript and angular directive

I feel this is deeply inelegant, but I really want the option of classical inheritance in the future. How could this be written better. FYI animation here is from GSAP if you are curious. ...
1
vote
3answers
228 views

Cleanest way to close over a counter in CoffeeScript

I haven't spent too much time with CoffeeScript and am trying to have a simple counter: ...
1
vote
1answer
342 views

JQuery Dynamic Dropdown Update

This is based (somewhat loosely) on the code written in this railscast. I'm planning to re-use it in different places throughout the site, so I made it a bit more generic rather than based on IDs. ...
3
votes
2answers
258 views

Passing Context in CoffeeScript

I'm trying to migrate from JavaScript to CoffeeScript. However I'm not sure about the best way to optimize the code generated by js2coffee. Below is the original JavaScript source : ...
3
votes
1answer
199 views

Functional Sundaram's sieve

I wrote this Sundaram's sieve in Coffeescript to quickly generate prime numbers up to limit: ...
5
votes
1answer
120 views
2
votes
2answers
268 views

My first real JS project, simple form validation

I would really like to hear how I can improve my form validator. Next, I want to refactor it into OO and learn a testing framework like Jasmine. Some things I know I could improve Don't make it ...
3
votes
2answers
1k views

Better way to do this in coffeescript

I was actually writing this little script: ...
4
votes
2answers
3k views
2
votes
1answer
114 views

Assign local-variables in constructor

How to make this code in constructor more DRY? Is there some more concise way to assign variables passed through object? ...
3
votes
1answer
99 views

CoffeeScript method refactoring

This method is from Backbone-View. I'd like to refactor it but I don't have much experience with Coffee or JavaScript. ...
2
votes
1answer
262 views

Object Wrapper/Parameter Injection Module for CoffeeScript/JavaScript

I made an object wrapper/parameter injector and I hope it will be useful, I made it for a project I am working on but then decided to try polishing it a bit. The use case is for wrapping objects such ...