💥 New scroll badge in DevTools: Find scrollable elements faster

Debugging scroll-related issues just got easier with DevTools' new scroll badge! This post explains what scrollable elements are, why they can be difficult to find, and how this new feature helps you quickly locate them. We'll also take you behind the scenes to see how we developed the scroll badge.

🪴 Come to the light-dark() Side

You’d be forgiven for thinking coding up both a dark and a light mode at once is a lot of work. You have to remember @media queries based on prefers-color-scheme as well as extra complications that arise when letting visitors choose whether they want light or dark mode separately from the OS setting. And let’s not forget the color palette itself! Switching from a “light” mode to a “dark” mode may involve new variations to get the right amount of contrast for an accessible experience.

💠 Migrating from Webpack and react-scripts to Vite: The Path to Fast and Lightweight React

Hello everyone! For a long time, my projects were built using Webpack. While powerful, Webpack often felt like a challenge to configure. Recently, my colleagues have been raving about Vite — a lightweight and fast tool for building web applications. Curious to try it out, I encountered some interesting discoveries and challenges, which I’ll share in this article. I hope my experience will help you make a decision and simplify your migration process.

⛅️ Meet the New Safe Assignment Operator (?=) in JavaScript

Modern JavaScript development often encounters tasks involving asynchronous operations and error handling. Typically, try-catch and async-await constructs are used for these purposes. However, they can bloat the code and make it harder to read. To address this issue, a new safe assignment operator ?= has been proposed, which significantly simplifies error handling and improves code readability. In this article, we’ll explore how this operator works, its features, and the benefits it offers developers.

🪡 Exploring Playful Context-Aware Animations for Fixed Elements

The other day, I was browsing a nicely designed “About” page, and, like many other sites, it had the familiar pattern of a fixed logo at the top while scrolling. This is quite common, but sometimes the logo ends up overlapping with the text, making things a bit hard to read. You might see this as a quirk of brutalist design, but it got me thinking: what if we hide the logo during those moments when it intersects with the text?

Free Figma Template: Real estate

🧠 Difficulty: 🥕🥕🥕

#Figma #Template

⭐️CSS Tip!⭐️

To create an inverted :hover effect, you can use mix-blend-mode with custom :hover properties.

button > span {
  left: calc(var(--x, 0) * 1px);
  top: calc(var(--y, 0) * 1px);
  mix-blend-mode: difference; 
}

The cool thing is that using mix-blend-mode acts as a color inverter, which works well with monochrome controls.

As for how to move this code to JavaScript?

const UPDATE = ({target, x, y }) => {
  const bounds = target.getBoundingClientRect()
  target .style.setProperty('--x', x - bounds.left)
  target .style.setProperty('--y', y - bounds .top)
}

const BTNS = document.querySelectorAll('button')
BTNS.forEach(BTN => BTN.addEventListener('pointermove', UPDATE))

button:is(:hover, :focus-visible) {
  --active: 1;
}
button span {
  transform: translate(-50%, -50%) scale(calc(var(--active, 0) * 3);
  transition: transform 0.25s;
}

🤳 How to Validate Forms in React and React Native Using Yup and Formik

Validation is a key part of development, regardless of what programming language you’re writing. Developers should always be validating user input, API parameters, and retrieved values.

Free Figma Template: MYEL

🧠 Difficulty: 🥕🥕

#Figma #Template

reveal.js is an open source HTML presentation framework. It enables anyone with a web browser to create beautiful presentations for free.

❓❓❓What are you running this code for and why?

Write the answer in the comments 🔻

✅ Answer:

31
31

🔍 Explanation:

Creating the person1 object: The person1 object is created with properties name and age.
Assigning person2 = person1: This does not create a copy of the person1 object but instead creates a reference to the same object in memory. As a result, both person1 and person2 point to the same object.
Modifying the age property of person2: Changing person2.age also affects person1.age because both identifiers refer to the same object.
Outputting person1.age and person2.age: Both values will be 31 because the modification to person2.age also altered person1.age.

🤠 GDevelop is a full-featured, no-code, open-source game development software. You can build 2D, 3D and multiplayer games for mobile (iOS, Android), desktop and the web. GDevelop is fast and easy to use: the game logic is built up using an intuitive and powerful event-based system and reusable behaviors.

Free Figma Template: RIVO - multi page template

🧠 Difficulty: 🥕🥕🥕🥕

#Figma #Template

🎄 Hey everyone, happy New Year in advance!

This year has been full of coding, bug hunting, fixes, and tons of growth in our favorite craft. 💻 Here’s to 2025 bringing you exciting projects, smooth deadlines, and endless inspiration for new achievements.

Wishing you clean code, responsive designs, and a perfect balance between work and life. May your documentation always make sense, and your deployments go flawlessly on the first try. 🚀

Thank you for sticking around this year. There’s so much more exciting content and surprises coming your way.

✨ Speaking of surprises... In 2025, I’m launching a platform with courses and premium Figma templates designed specifically for web developers! The courses will be hands-on, guiding you step by step to create your very own portfolio-ready pet project. Whether you’re just starting or looking to sharpen your skills, this platform will be your go-to for practical learning and professional growth.

Happy New Year! 🥂

📚 The Art of Micro Frontends: Build highly scalable, distributed web applications with multiple teams (2024)

By: Florian Rappl

#book #free_book

🚃 React Folder Structure in 5 Steps [2024]

Organizing large React applications into folders and files is a topic that often sparks strong opinions. I found it challenging to write about this, as there isn't a definitive "correct" approach. However, I frequently get asked how I structure my React projects, from small to large, and I'm happy to share my approach.

✍️ Drag to Select

This past summer, I led a project at Makeswift to rework our file manager. Makeswift is a website builder and many of our users have hundreds of files. To manage hundreds of anything you need bulk operations, but bulk operations aren't helpful if selecting things is cumbersome, so drag selection was a key part of my vision for making Makeswift's file manager feel native.

Free Figma Template: Newspaper

🧠 Difficulty: 🥕🥕🥕🥕

#Figma #Template