Follow
Click to Follow MozDevNet
MDN Web Docs
@MozDevNet
The official MDN Web Docs account. We deliver the best web docs around.
MDN Web Docs’s Tweets
⏰ Less than 20 minutes left!
Join and at 12:45 PM for an inspiring session on "Building Internet Health Movement" at #RightsCon!
Register now to be part of this discussion.
rightscon.summit.tc/t/rightscon-co
3
7
Modern HTML has many performance controls:
🔑 Prioritize a key image: <img fetchpriority=high>
💤 Lazy-load images: <img loading=lazy>
🌐 Warm connections to origins: rel=preconnect
🕐 Fetch late-found resources: rel=preload
⏭️ Fetch next-page navigations: rel=prefetch
read image description
ALT
31
496
2,918
Exciting news! 🎉
Our friends at are joining us at #MozFest House Amsterdam!
They'll be sharing insights on fostering transparency, building a cooperative economy, and more.
Find out all the details here. 👇
1
4
14
Hey there, aspiring #WebDevelopers! 🚀✨ Discover the incredible world of #RegularExpressions with the latest update on MDN Blog. From validating user input to extracting data, Regular Expressions will take your projects to the next level. developer.mozilla.org/en-US/blog/reg #MDNBlogUpdate
1
3
15
Congratulations to the top prize winners of our Responsible AI Challenge 🎉
These projects displayed ingenuity and innovation in developing human-centered solutions.
1
7
24
Improve accessibility and user experience on your website with #HTML landmark roles. The #MDNBlogUpdate explores the power of #ARIA landmarks and how they aid screen reader users. developer.mozilla.org/en-US/blog/ari #a11y
2
8
2
6
20
Discover the power of :not() pseudo-class and how it revolutionizes #CSS. From beginners to seasoned developers, this post unlocks a new toolbox. developer.mozilla.org/en-US/blog/css #MDNBlogUpdate
3
11
Stay ahead of the curve with CSS Colors Module Level 4. Explore the world of color manipulation in #CSS, including new features and functions. Read more on MDN Blog: developer.mozilla.org/en-US/blog/css #WebDev #CSSColors #MDNBlogUpdate
7
22
Today we’re outside office in SF, delivering our message loud and clear📢
We need basic safety and privacy features on Slack, incl the option for end-to-end encryption for messages, and anti-harassment features like blocking and reporting. #MakeSlackSafe
8
20
136
Data sharing between platforms & the research community has been fraught & fragile, but not anymore. Here’s how #DSA can lead the #transparency movement by making data accessible to researchers.
➡️ mzl.la/438lRK2
6
33
🌈 Get ready to transform your web page into a canvas of imagination! Learn how to draw shapes using #JavaScript in our latest blog post. Hexagons, triangles, and more await. Let your creativity shine! developer.mozilla.org/en-US/blog/jav #WebDevelopment #JavaScriptArt #MDNBlog
7
🌟 Unleash your creativity with JavaScript shape drawing! Dive into the latest blog post from MDN and discover how to create stunning visuals using the <canvas> element. Let your imagination run wild! developer.mozilla.org/en-US/blog/jav #JavaScript #ShapeDrawing #MDNBlogUpdate
4
12
Learn how to enhance usability for screen reader users in the latest #MDNBlogUpdate. Discover the benefits of ARIA landmark roles and ensure an inclusive browsing experience. developer.mozilla.org/en-US/blog/ari #Accessibility #ARIA #a11y
3
22
AND WE'RE LIVE! 🎥
Uncover the hidden impacts of AI biases with and join the conversation as we dive into the far-reaching consequences of discriminatory systems and explore ways to address these biases.
Join us here: youtube.com/watch?v=HA_jFq
Quote Tweet
Uncover the impact of AI bias. 
Join us & @mozillafestival on Tues, May 30 @ 11 am ET to explore the consequences of discriminatory tech practices and #algorithmicbias with @amirad (our Dir Impact Partnership), @Abebab, @kaschm, and @iamxavier. #BADINPUT youtube.com/watch?v=HA_jFq
Join us & @mozillafestival on Tues, May 30 @ 11 am ET to explore the consequences of discriminatory tech practices and #algorithmicbias with @amirad (our Dir Impact Partnership), @Abebab, @kaschm, and @iamxavier. #BADINPUT youtube.com/watch?v=HA_jFq7
11
Are you a seasoned #WebDeveloper looking to level up your #CSS game? Dive into the #MDNBlogUpdate that explores the powerful :not() pseudo-class. Enhance your CSS skills and learn how to selectively style specific elements while excluding others.
7
18
Hey there, aspiring #WebDevelopers! 🚀✨ Discover the incredible world of #RegularExpressions with the latest update on MDN Blog. From validating user input to extracting data, Regular Expressions will take your projects to the next level. developer.mozilla.org/en-US/blog/reg #MDNBlogUpdate
2
10
🎨🌈 Calling all web developers! Dive into the world of colors with the latest #MDNBlogUpdate. Explore the CSS Colors Module Level 4 and unlock new ways to manipulate and display colors in CSS. developer.mozilla.org/en-US/blog/css #CSS #WebDevelopment #ColorManipulation
7
17
Check out the comprehensive Regular Expressions Reference on MDN Web Docs and supercharge your coding skills! 💪👩💻👨💻 - developer.mozilla.org/en-US/blog/reg #MDNBlogUpdate #RegExp
1
6
28
In 2022 we reviewed 27 mental health apps’ privacy policies. 23 of 27 failed 👎
Well, we’ve reviewed the same apps (and some new) and while there’s some good, there's still a lot of bad❌
Did your fav app step up when called out? #PrivacyNotIncluded
2
18
64
How to draw any regular shape with just one #JavaScript function - developer.mozilla.org/en-US/blog/jav by #MDNBlog #CodeArt
10
32
Do you know a filmmaker, educator, or social media creator using storytelling to inspire essential conversations?
Help shine a spotlight on your favorite creators by nominating them for our #Rise25 awards here ⤵️
10
21
MDN Web Docs's new reference pages on #JavaScript regular expressions are a game changer, with examples of capturing groups, named capturing groups, and more. Up your RegExp knowledge 🙌 developer.mozilla.org/en-US/blog/reg #RegExp
9
36
Thank you for the honest feedback and keeping us honest. We are updating the blog header images to ensure everything passes color contrast at the WCAG AAA level. #accessibility 🙌
1
19
Show this thread
Today is mental health action day mentalhealthaction.network - How are you all doing?
❤️ - I’m doing splendidly
🧡 - I’m OK
💛 - It can go either way
💜 - I’m struggling a bit
💙 - I am feeling a bit cold and can do with some support
6
15
Today is Global #Accessibility Awareness Day #GAAD2023 - In celebration, we have posted a new post to the blog and will share some interesting and helpful tweets throughout the day. #a11y #WebDevelopers #Inclusivity
4
9
19
🦖 Random MDN: HTMLTableSectionElement 🦖
developer.mozilla.org/en-US/docs/Web
The HTMLTableSectionElement interface provides special properties and methods (beyond the HTMLElement interface it also has available to it by inheritance) for manipulating the layout and pr…
#webdev
1
5
A short video demonstrating a few different tools that will help #WebDebelopers and #designers ensure their colors meet the color contrast WCAG success criterion. #accessibility #a11y #GAAD2023 -
2
8
☕️ A good read on supporting older browsers (by ) - how to use modern web techniques without locking out users of older technology.
The article provides recommendations and some tools to help with this process — developer.mozilla.org/en-US/docs/Lea
#accessibility #webdevelopment
4
10
Quote Tweet
Happy Global #Accessibility Awareness Day! Many people may not have heard of the curb-cut effect. It is the idea that making an affordance for one group of people ends up benefiting society at large. The curb cut is one of these. carleton.edu/accessibility- #GAAD2023
2
8
Join us in the hunt for the 25 extraordinary individuals who are leading the charge in shaping a brighter future for the internet.
Don't miss out on nominating tomorrow's game-changers.
Submit your nominations now!
2
8
I've published some new MDN documentation about the Storage Access API (for requesting access to blocked 3rd party cookie access):
5
26
Great news for those who use screen readers and other assistive tech:
The latest version of Firefox is now up to x21 faster! Read more about our accessibility upgrades here ⤵️
27
84
471
At the moment, only a few of the many features described on expose this Baseline badge, as a way to solicit initial feedback from developers. For example, check the grid CSS property documentation: developer.mozilla.org/en-US/docs/Web
read image description
ALT
1
1
4
Show this thread
Hey! Are you aware that CSS nesting is now available on Chrome and Safari? CSS variables are also standard now 😎
( note that nesting is sometimes available with a flag enabled )
But we’re getting there 💪
1
1
10
Apple introduces new features for cognitive #accessibility, along with Live Speech, Personal Voice, and Point and Speak in Magnifier - apple.com/newsroom/2023/ #GAAD2023
2
14