Fixing "Uncaught ReferenceError: ga is not defined" Are you staring at a pesky *"Uncaught ReferenceError: ga is not defined"* console error message r...
A list of available parameters for Storybook's Info addon [Storybook](https://github.com/storybookjs/storybook) has **"Info addon"** that shows additional ...
A quick bash tip: find files containing specific text This command works on both Linux and Mac: ```bash grep -Rl --include \*.py 'search_vector' ./...
How to get number of days in a month with JavaScript ```javascript const getDaysInMonth = date => new Date(date.getFullYear(), date.getMonth() + 1...
How to test if element exists/doesn't exist with Jest and react-testing-library At first, let's create a simple avatar component: ```javascript function Avatar({ username, s...
How to get the domain name of a server that hosts a JavaScript file? It can be done in two steps: ## 1) Determine a JavaScript file URL with `document.currentScrip...
How to add multiple CSS styles to an element in Vanilla JavaScript If you want to add multiple CSS styles to an element in Vanilla JS, you could do something like t...
Testing emails in Django Sending email messages from a web app often seems like throwing stones into a black hole. You cre...
How to make object-fit: 'cover' work for video backgrounds in Edge Video backgrounds are everywhere, and the most common way to make one is to set `object-fit: 'cov...