...HTML elements can automatically start playing when the autoplay attribute is set on them. Except for when they can not...
Debugging performance issues in your Rails app can be a tough challenge. To get more detailed insights consider using the...
Relative length units in media queries are based on the initial value, which means that units are never based on...
If you are using git submodules in Gitlab CI, you might run into a "The project you were looking for...
tl;dr Prefer request specs over end-to-end tests (Capybara) to joyfully test file downloads! Why? Testing file downloads
A common cause of non-accessible web pages are elements that were made interactive via JavaScript but cannot be focused...
I recently noticed a new kind of flaky tests on the slow free tier GitHub Action runners: Integration tests were...
Any form fields where users enter numbers should be an . Numeric inputs have several benefits over : On mobile or tablet...
A Rails script lives in lib/scripts and is run with bin/rails runner lib/scripts/.... They are a simple tool to perform...
Today I learned that you can animate HTML elements using the Web Animation API's method .animate(keyframes, options) (which...
Version 3.7.0 broke some things in complex forms. Sorry for that. Concurrent user input is hard. 3.7.1 This change fixes...
Added: State machine can now use the :prefix-option to avoid name collision if you define multiple state machines on...
Make sure that you use the correct property when editing an HTML attribute. Using innerHTML with unsafe arguments makes your...
Every modern Rails app should have a Content Security Policy enabled. Very compatible default The following "default" is a minimal...
While upgrading CarrierWave from version 0.11.x to 3.x, we encountered some very nasty fails. Below are the basic...
All direct child directories of app are automatically added to the eager- and autoload paths. They do NOT create a...
View specs are a powerful tool to test several rendering paths by their cases instead of using a more costing...
The recommended additional setup of the spreewald gem, a useful set of cucumber steps, includes adding a file for defining...
Chromedriver (or selenium-webdriver?) will not reliably scroll elements into view before clicking them, and actually not click the element...
Browsers can auto fill-in one time codes if advised. Use it like this: Demo: https://twitter.com/sulco/status/1320700982943223808 Browser support...
For my computer science bachelor's thesis I programmed and evaluated a CLI Test Case Prioritization (TCP) tool for makandra...
Rails' url_for is useful for generating routes from a Hash, but can lead to an open redirect vulnerability.
Rails offers several methods to manage three types of different cookies along with a session storage for cookies. These...
If you want to collapse/expand elements with dynamic content (and thus unknown height), you can not transition between height: 0...