Jasmine specs for the frontend often need some DOM elements to work with. Because creating them is such a common...
Jasmine specs that work with DOM elements often leave elements in the DOM after they're done. This will leak...
tl;dr In Chrome DevTools in the Layouts tab you have handy options to debug CSS Flexbox and Grid. Including...
While in CSS zero is usually referenced without specifying a unit (e.g. padding: 0), you must not use a unitless...
Large Rails projects tend to define multiple custom ways to format Dates or DateTimes. This often leads to duplicated format...
sass >= 1.35.0 has the option quietDeps and silenceDeprecations to silence deprecation warnings from dependencies. quietDeps: No deprecation warnings for dependencies...
tl;dr In Chrome DevTools in the Sources tab you can activate Event Listener Breakpoints for debugging events. Example
tl;dr In Chrome DevTools in the Elements tab or in Firefox in the Inspector tab you can right click...
tl;dr In the Elements tab in the Chrome DevTools you can right click on an element and select Store...
ActiveType::Object inherits from ActiveRecod::Base and is designed to behave like an ActiveRecord Object, just without the database...
If you're experiencing that your bundle install command fails with an error message like this, rubygems.org might...
Unpoly's [up-observe], [up-autosubmit] and [up-validate] as well as their programmatic variants up.observe() and up.autosubmit...
tl;dr Since Rails 7+ you can use ComparisonValidator for validations like greater_than, less_than, etc. on dates, numerics...
You can use ETags to allow clients to use cached responses, if your application would send the same contents as...
One rule of thumb I try to follow in capybara tests is using capybara matchers and not plain rspec matchers...
tl;dr In RubyMine you can use find and replace with capture groups (.*?) and backreferences $1 (if you have several...
The robots.txt file and HTML tag can be used to control the behavior of search engine crawlers. Both have different...
Ruby's standard library includes a class for creating temporary directories. Similar to Tempfile it creates a unique directory name...
tl;dr Since Rails 6+ you can use before? and after? to check if a date/time is before or after...
To allow HTTP 304 responses, Rails offers the fresh_when method for controllers. The most common way is to pass...
For Rails models where only one of multiple attributes may be filled out at the same time, there is no...
When you build a JSON API you need to come up with a style to represent attributes, pagination, errors or...
Greg Molnar has written a neat article about creating a single-file Rails app. This is not meant for production...
Note Use yarn dedupe in Yarn v2+: https://yarnpkg.com/cli/dedupe This package only works with Yarn v1. Yarn v2 supports...