Webpacker uses Babel and Webpack to transpile modern JavaScript down to EcmaScript 5. Depending on what browser a project needs...
Touch devices have their own set of events like touchstart or touchmove. Because mobile browsers should also work with with...
When you need test images, instead of using services like lorempixel or placehold.it you may generate test images yourself.
If you have a single node elasticsearch instance and indices with replicas enabled your cluster state will be yellow. If...
You need to update a lof gems. Make sure you don't have any version constraints in your...
In Spreewald 1.10.4+, nested patiently blocks are now patient. Here is an example: patiently do outer_code patiently do
Form fields can be rendered as noneditable by setting the disabled or the readonly attribute. Be aware of the differences...
Note netstat has mostly been superseeded by its more modern rewrite ss which nowadays comes pre-installed rather than netstat...
Font Awesome version 5 changed some icon names, and introduces new prefixes fab, far, and fas. There is a JavaScript...
Rails applications and ruby gems should have a README that gives the reader a quick overview of the project. Its...
wrap the text with a span use line-height for the spacing between lines ("margin")
To check if a method has been called in Jasmine, you first need to spy on it: let spy = spyOn...
If you try to listen to events on elements that are nested inside a , Firefox will stop event propagation once...
By default, browsers will not wrap text at syllable boundaries. Text is wrapped at word boundaries only. This card explains...
If your Angular app has some decent complexity, it will not be easy to use UI Router straight away. Here...
Checking if a JavaScript value is of a given type can be very confusing: There are two operators typeof and...
You are not using javascript tests The file is served from a public folder (not via controller) Problem description...
An end-to-end test (E2E test) is a script that remote-controls a web browser with tools like Selenium...
Slides for Henning's talk on Sep 21st 2017. Understanding sync vs. async control flow Talking to synchronous (or "blocking...
If another session is accessing your database you are trying to reset or drop you might have seen the following...
Here is some JavaScript code that allows you to click the screen and get the clicked element's text contents...
Sometimes modern Javascript projects get out of hand. A major culprit in this can be the messy handling of asynchronous...
If you want to ssh into your vagrant box without switching into the project directory and typing vagrant ssh, you...
You should prefer native promises to jQuery's Deferreds. Native promises are much faster than their jQuery equivalent. Native promises...