If you need to modify (e.g. add 2px) a Sass variable that defines multiple values as one (e.g. for short...
To simulate Rails' to_sentence in your JavaScript application, you can use these few lines of CoffeeScript code: joinSentence = (array...
When you're nesting setTimeout(f, 0) calls, your browser will silently increase the delay to 5 milliseconds after the...
Resources Rails Guide: Internationalization API Guide to localizing a Rails application Locale-aware helpers in ActionView::Helpers::NumberHelper
By convention, common protocols use a defined port, like 80 for HTTP or 443 for HTTPS. You can use nmap...
When building a web application, one is tempted to claim it "done" too early. Make sure you check this list...
...The and tags both come with some non-default behavior that you know from other tags.
You can define methods using def or define_method. In the real world, there is no performance difference.
Ruby 2.3.0 has been around since end of 2015. It brings some pretty nice new features! Make sure to read...
All new browsers support the new object-fit CSS property. It allows to specify how an element behaves within its...
Ever needed to use a global variable in Rails? Ugh, that's the worst. If you need global state, you...
Reading user input in console applications is usually done using Kernel#gets. Stubbing that can be a bit hairy.
When testing Ruby code that prints something to the terminal, you can test that output. Since RSpec 3.0 there is...
IE has a "Compatibility Mode" for old browsers. You can keep IE from offering it (and fix some other things...
The linked site hosts a simple test. It shows two images with narrow vertical/horizontal lines. The more they resemble each...
PostgreSQL uses the C library's locale facilities for sorting strings: First, all the letters are compared, ignoring spaces and...
The way that Javascript schedules timeouts and promise callbacks is more complicated than you think. This can be the reason...
As your Rails project grows, you will accumulate a number of small patches. These will usually fix a bug in...
to create a Gallery that has a name and has_many :images, which in turn have a...
UI sortable helps reordering items with drag 'n drop. It works quite fine. Proven configuration for sorting table rows
TL;DR If you want to support most browsers, then don't exceed 50 cookies per domain, and don't...
Spreewald gives you the within meta step that will constrain page inspection to a given scope. Unfortunately, this does not...
When you find yourself in the situation that you would like to define a custom matcher in your specs, but...
To delay your entire Jasmine test suite until the DOM is ready, add the following: beforeAll(function(done) { $(done); });