Let's say we have an element:
```html
Click me
```
And we want to check if the element has the `active` class.
Here's how to do this in two simple steps.
#…
Picture this: you have a fork (***origin***) of a GitHub repo (***upstream***). You submitted a PR from ***origin*** to ***upstream*** and then, ***upstream*** contribut…
I've played and worked with multiple programming languages over my 15-year long career in development (and a bit before, when I studied at school and university). Every …
I've been working with the Django cache recently. And while Django has exceptional caching capabilities, I was surprised to find out that it doesn't provide a simple way…
Are you getting a `ReferenceError: primordials is not defined` error message when trying to run **gulp**? Chances are you're on `gulp v3` and `node v12`, and that's the …
If you're on Dokku and after executing `dokku letsencrypt ` you get an error that looks like this:
```bash
ACME server returned an error: urn:acme:error:unauthorized…
Django's request object has a nifty little method `is_ajax`. It allows determining whether a request comes from a JS framework (aka old-school ajax). While it works fine…
Let's say I want to remove the **User** menu item from Wagtail settings menu.
All I need to do is to put this hook into `wagtail_hooks.py` file of my Wagtail CMS app:…
Are you swearing at mailgun now? Have you smashed your keyboard already? Do you keep receiving the `Domain not found: domainname.com` error although you're 100% sure you…
Are you staring at a pesky *"Uncaught ReferenceError: ga is not defined"* console error message right now?
Yeah, I feel your pain, I've just lost two hours of my life…
[Storybook](https://github.com/storybookjs/storybook) has **"Info addon"** that shows additional information for your stories. It's handy when you want to display the st…
This command works on both Linux and Mac:
```bash
grep -Rl --include \*.py 'search_vector' ./
```
In my case I'm looking for *'search_vector'* text in my python …
```javascript
const getDaysInMonth = date =>
new Date(date.getFullYear(), date.getMonth() + 1, 0).getDate();
getDaysInMonth(new Date(2019, 1)); // 28 days in Febr…