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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5answers
326 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
23 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, ...
9
votes
1answer
78 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
38 views
8
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1answer
107 views
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votes
0answers
22 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
55 views
Currying options for Bootstrap components for use in Meteor
Bootstrap 3 helper (redacted) for displaying alerts.
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vote
1answer
117 views
2
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1answer
68 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 ...
0
votes
1answer
176 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
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3
votes
2answers
73 views
How can I remove DRY violations from this event handling code?
I've got a bunch of event handlers that follow this pattern:
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0
votes
0answers
50 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
86 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
80 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
127 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:
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3
votes
2answers
110 views
Fibonacci using cache
This is my simple Fibonacci implementation in CoffeeScript. What do you think? Using cache (fibResults), it's very very fast.
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1
vote
0answers
242 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 ...
3
votes
2answers
446 views
0
votes
1answer
96 views
1
vote
1answer
117 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
148 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.
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2
votes
3answers
784 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.
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0
votes
1answer
1k 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
270 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.
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1
vote
1answer
363 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.
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1
vote
3answers
200 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:
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1
vote
1answer
319 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
206 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 :
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3
votes
1answer
184 views
Functional Sundaram's sieve
I wrote this Sundaram's sieve in Coffeescript to quickly generate prime numbers up to limit:
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3
votes
0answers
92 views
2
votes
2answers
253 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
3
votes
2answers
3k views
2
votes
1answer
110 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?
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3
votes
1answer
97 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.
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2
votes
1answer
240 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 ...
2
votes
2answers
83 views
Is there any way to make this CoffeScript code simpler / smaller
I've just started with coffeescript, and I saw http://blog.8thlight.com/uncle-bob/2012/04/20/Why-Is-Estimating-So-Hard.html which has a little programming problem, so I figured I'd do it in ...
4
votes
3answers
141 views
Can this coffeescripts method be simplified?
I'm new to coffeescripts. Can the getSum method be simplified more? Thanks
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2
votes
1answer
474 views
PageObject implementation (CoffeeScript, CasperJS)
I'm using CasperJS and CoffeeScript for integration testing of a hobby project. Page Objects seem to be a useful abstraction. I had two major requirements:
Support for node.js style callbacks - ...
0
votes
1answer
107 views
Count non-transparent pixels in a canvas
I need to count non-transparent pixels in a canvas. I am pretty sure there is a nice and elegant syntax for doing this. Note that the data returned by getImageData ...
5
votes
1answer
308 views
Project Euler question 2 in CoffeeScript
By considering the terms in the Fibonacci sequence whose values do not exceed four million, find the sum of the even-valued terms.
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4
votes
1answer
518 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 ...
3
votes
1answer
185 views
Is there a better way to structure this in CoffeeScript?
I have this recursive function that searches an object tree structure:
...
0
votes
1answer
125 views
Is there any javascript pitfalls with this approach that I might be missing?
I have a model with a number of complex/simple properties that has a corresponding strongly typed view, that calls EditorFor to a custom editor template view for the model.
One of the form's ...
2
votes
2answers
101 views
Similar but slightly different JavaScript functions
I have two very similar functions that exist mainly for syntactic sugar.
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0
votes
1answer
105 views
Writing binding providers in CoffeeScript?
In his KnockoutJs 1.3 beta post, Steve Sanderson has an example of using Binding providers ("5. Binding providers (and hence external bindings)") where he makes a comment in the JSFiddle JavaScript ...
4
votes
3answers
140 views
2
votes
1answer
610 views
A library written in CoffeeScript
So, I wrote this small library for fast DOM building with API tailored for CoffeeScript
I feel like the code overall can be made better/smaller/faster.
I am also not particularly happy about a few ...
4
votes
4answers
736 views
Short coffeescript style question
I'm going through the CoffeeScript book by Trevor Burnham, and I was curious as to what the best style is for a function I was writing.
In the book the author writes the function like so:
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11
votes
3answers
4k views
Coffeescript beautification and refactoring
As much as I try, I cannot seem to get this Coffeescript code to look beautiful (I'd like to think it is possible). I have tried both Javascript and Coffeescript. Just to be clear, this code works ...
