Ruby has the class Rational which allows you to store exact fractions. Any calculation on these variables will now use...
Even when you app has no CSS at all, you still inherit a default user agent stylesheet from your browser...
Every modern Rails app should have a Content Security Policy enabled. Very compatible default The following "default" is a minimal...
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...
Besides Plotting graphs in Ruby with Gruff, which comes handy for many uses cases, you sometimes might need configuration for...
For my computer science bachelor's thesis I programmed and evaluated a CLI Test Case Prioritization (TCP) tool for makandra...
Newest versions of Chromedriver breaks the user agent for device emulation via device name. In previous versions the user agent...
You can tell npm to install a package globally with npm -g install @puppeteer/browsers. However, it seems that its not...
If you want to collapse/expand elements with dynamic content (and thus unknown height), you can not transition between height: 0...
TL;DR: Grid elements have min-width: auto in a 1fr column, which may lead to overflows. With minmax(0...
Note: You won't need this for single lines of text. In this case it is better to just use...
When you write your next CarrierWave uploader, consider processing your images with libvips instead of ImageMagick. Reasons for libvips
Using querySelector or querySelectorAll in JavaScript, you can easily find descendants of a node that match a given selector.
So you have a heading that is just barely wider than the container it should fit into, and it wraps...
We have a long-standing checklist for merge requests. However, it hardly matches the intricate requirements for design. This checklist...
Code splitting is a feature of esbuild that can keep huge libraries out of the main bundle. How code splitting...
As we are slowly switching from Cucumber scenarios to RSpec feature specs, you might be tempted to write assertions like...
Web forms can be made much more usable with a few HTML attributes. Short summary: type: Tells browsers about the...
Debugging your integration tests, that run a headless Chrome inside a docker image, is tricky. In many cases you can...
Within Capybara you most certainly use the #check- and #uncheck-method to (un)check checkboxes. But there's one problem...
Looking at the source code of the validates_numericality_of validator, it becomes clear that it converts the attribute in...