Mat “Wilto” Marquis
@wil.to
Melee DPS.
I’m https://wil.to
I'm writing https://piccalil.li/javascript-for-everyone
I make https://multipa.ge
I wrote https://web.dev/learn/javascript and https://web.dev/learn/images
I’m https://wil.to
I'm writing https://piccalil.li/javascript-for-everyone
I make https://multipa.ge
I wrote https://web.dev/learn/javascript and https://web.dev/learn/images
Pinned
Mat “Wilto” Marquis
@wil.to
· Oct 14
JavaScript for Everyone
A high quality, expansive written course that will elevate your JavaScript skills to a level you never thought was achievable.
piccalil.li
At last, today is the day. I am immensely proud to announce that JavaScript for Everyone is here.
Tell a friend, tell a Slack channel — write it on a slip of paper, fold it once, and slide it across your boss' desk without breaking eye contact. _It's time to get weird._
piccalil.li/javascript-f...
Tell a friend, tell a Slack channel — write it on a slip of paper, fold it once, and slide it across your boss' desk without breaking eye contact. _It's time to get weird._
piccalil.li/javascript-f...
Reposted by Mat “Wilto” Marquis
POV you fall asleep on the couch and this wakes you up at 3am
No other JavaScript course gives you the feeling... of JavaScript for Everyone.
piccalil.li/javascript-f...
piccalil.li/javascript-f...
December 3, 2025 at 6:18 PM
POV you fall asleep on the couch and this wakes you up at 3am
Reposted by Mat “Wilto” Marquis
📜 "Date is out, Temporal is in"
An article by @wil.to on problems found in the ancient JS Date API and how they are solved in the modern Temporal API 👍
Focuses on immutability and ergonomics of calculations. Love the kicker.
An article by @wil.to on problems found in the ancient JS Date API and how they are solved in the modern Temporal API 👍
Focuses on immutability and ergonomics of calculations. Love the kicker.
January 14, 2026 at 8:35 AM
📜 "Date is out, Temporal is in"
An article by @wil.to on problems found in the ancient JS Date API and how they are solved in the modern Temporal API 👍
Focuses on immutability and ergonomics of calculations. Love the kicker.
An article by @wil.to on problems found in the ancient JS Date API and how they are solved in the modern Temporal API 👍
Focuses on immutability and ergonomics of calculations. Love the kicker.
Reposted by Mat “Wilto” Marquis
A really common user interface pattern is a big clickable area, such as a card. Sometimes you need controls within that card that are also clickable. There's lots of ways to do it wrong, but fret not, @ericwbailey.website is here to show you how to do it right.
piccalil.li/blog/accessi...
piccalil.li/blog/accessi...
Accessible faux-nested interactive controls
A really common user interface pattern is a big clickable area, such as a card. Sometimes you need controls within that card that are also clickable. There's lots of ways to do it wrong, but fret not,...
piccalil.li
January 15, 2026 at 12:18 PM
A really common user interface pattern is a big clickable area, such as a card. Sometimes you need controls within that card that are also clickable. There's lots of ways to do it wrong, but fret not, @ericwbailey.website is here to show you how to do it right.
piccalil.li/blog/accessi...
piccalil.li/blog/accessi...
A team of scientists with ten uninterrupted years couldn’t come up with something more viscerally satisfying than slowly walking past a Cybertruck stuck in traffic while doing a full-eye-contact jerk-off motion at the waxy old driver, who looks more like a thumb hit with a hammer by the second.
January 14, 2026 at 6:40 PM
A team of scientists with ten uninterrupted years couldn’t come up with something more viscerally satisfying than slowly walking past a Cybertruck stuck in traffic while doing a full-eye-contact jerk-off motion at the waxy old driver, who looks more like a thumb hit with a hammer by the second.
Reposted by Mat “Wilto” Marquis
Temporal shipped in Chrome 144 yesterday, so only Safari remains.
Here’s @wil.to explaining why it’s better piccalil.li/blog/date-is...
Here’s @wil.to explaining why it’s better piccalil.li/blog/date-is...
Date is out, Temporal is in
Temporal is the Date system we always wanted in JavaScript. It's extremely close to being available so Mat Marquis thought it would be a good idea to explain exactly what is better about this new Java...
piccalil.li
January 14, 2026 at 8:43 AM
Temporal shipped in Chrome 144 yesterday, so only Safari remains.
Here’s @wil.to explaining why it’s better piccalil.li/blog/date-is...
Here’s @wil.to explaining why it’s better piccalil.li/blog/date-is...
Reposted by Mat “Wilto” Marquis
⚠️ JPEG XL landed in Chromium! ⚠️
Gerrit Code Review
chromium-review.googlesource.com
January 13, 2026 at 11:48 AM
⚠️ JPEG XL landed in Chromium! ⚠️
All I’d be qualified to write is Partly-Correct Basic Conversational American Sign Language for Everyone, which would take the form of:
> Okay. So, lift your hand up, and— sorry, no, other hand. Yeah. Now, shape your hand like the thing surfers do in movies from the 90s. Now..."
> Okay. So, lift your hand up, and— sorry, no, other hand. Yeah. Now, shape your hand like the thing surfers do in movies from the 90s. Now..."
January 12, 2026 at 3:32 PM
All I’d be qualified to write is Partly-Correct Basic Conversational American Sign Language for Everyone, which would take the form of:
> Okay. So, lift your hand up, and— sorry, no, other hand. Yeah. Now, shape your hand like the thing surfers do in movies from the 90s. Now..."
> Okay. So, lift your hand up, and— sorry, no, other hand. Yeah. Now, shape your hand like the thing surfers do in movies from the 90s. Now..."
Reposted by Mat “Wilto” Marquis
The best time to replace Date would’ve been back in 1995 but the second best time is Temporal.Now.
@piccalil.li writing at its best.
piccalil.li/blog/date-is...
@piccalil.li writing at its best.
piccalil.li/blog/date-is...
Date is out, Temporal is in
Temporal is the Date system we always wanted in JavaScript. It's extremely close to being available so Mat Marquis thought it would be a good idea to explain exactly what is better about this new Java...
piccalil.li
January 9, 2026 at 1:41 PM
The best time to replace Date would’ve been back in 1995 but the second best time is Temporal.Now.
@piccalil.li writing at its best.
piccalil.li/blog/date-is...
@piccalil.li writing at its best.
piccalil.li/blog/date-is...
Ah, I bet that's because I’m Hacking the Gibson™ to lift the signup form from piccalil.li/javascript-f... on my site. I’ll get that sorted, but that link should get the same job done in the meantime. Appreciate it!
JavaScript for Everyone
A high quality, expansive written course that will elevate your JavaScript skills to a level you never thought was achievable.
piccalil.li
January 9, 2026 at 4:19 PM
Ah, I bet that's because I’m Hacking the Gibson™ to lift the signup form from piccalil.li/javascript-f... on my site. I’ll get that sorted, but that link should get the same job done in the meantime. Appreciate it!
Hearing a single note from Alive 2007 Winter-Soldier-activates me to run clear through the nearest wall.
January 9, 2026 at 3:40 PM
Hearing a single note from Alive 2007 Winter-Soldier-activates me to run clear through the nearest wall.
Alright, new year. Break’s over. We're back. We are AT DESK; we are ON COMPUTER.
So, who wants to set the tone, dorks? Who’s gonna set it?
wil.to/newsletters/...
So, who wants to set the tone, dorks? Who’s gonna set it?
wil.to/newsletters/...
Set the tone - JavaScript for Everyone
wil.to
January 9, 2026 at 3:13 PM
Alright, new year. Break’s over. We're back. We are AT DESK; we are ON COMPUTER.
So, who wants to set the tone, dorks? Who’s gonna set it?
wil.to/newsletters/...
So, who wants to set the tone, dorks? Who’s gonna set it?
wil.to/newsletters/...
Reposted by Mat “Wilto” Marquis
Our posh new OG images are live too.
I said I would do more actual coding this year and this is the first little thing piccalil.li/blog/date-is...
I said I would do more actual coding this year and this is the first little thing piccalil.li/blog/date-is...
Date is out, Temporal is in
Temporal is the Date system we always wanted in JavaScript. It's extremely close to being available so Mat Marquis thought it would be a good idea to explain exactly what is better about this new Java...
piccalil.li
January 7, 2026 at 5:05 PM
Our posh new OG images are live too.
I said I would do more actual coding this year and this is the first little thing piccalil.li/blog/date-is...
I said I would do more actual coding this year and this is the first little thing piccalil.li/blog/date-is...
Reposted by Mat “Wilto” Marquis
Gonna be real thrilled when I no longer have to import moment or luxon just to deal with time in JavaScript.
Time and credit card info, two things I really want to leave to somebody else.
Time and credit card info, two things I really want to leave to somebody else.
Temporal is the Date system we always wanted in JavaScript. It's extremely close to being available so Mat Marquis thought it would be a good idea to explain exactly what is better about this new JavaScript date system.
piccalil.li/blog/date-is...
piccalil.li/blog/date-is...
Date is out, Temporal is in
Temporal is the Date system we always wanted in JavaScript. It's extremely close to being available so Mat Marquis thought it would be a good idea to explain exactly what is better about this new JavaScript...
piccalil.li
January 7, 2026 at 9:42 PM
Gonna be real thrilled when I no longer have to import moment or luxon just to deal with time in JavaScript.
Time and credit card info, two things I really want to leave to somebody else.
Time and credit card info, two things I really want to leave to somebody else.
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.
Once again they SHOULD NOT be allowing me to cook.
codepen.io/Wilto/live/V...
Once again they SHOULD NOT be allowing me to cook.
codepen.io/Wilto/live/V...
Mega Man 2 (US) Intro Text
...
codepen.io
January 8, 2026 at 4:45 PM
The key words "MUST", "MUST NOT", "REQUIRED", "SHALL", "SHALL NOT", "SHOULD", "SHOULD NOT", "RECOMMENDED", "MAY", and "OPTIONAL" in this document are to be interpreted as described in RFC 2119.
Once again they SHOULD NOT be allowing me to cook.
codepen.io/Wilto/live/V...
Once again they SHOULD NOT be allowing me to cook.
codepen.io/Wilto/live/V...
Reposted by Mat “Wilto” Marquis
Me waiting for Temporal to be fully supported
January 7, 2026 at 3:41 PM
Me waiting for Temporal to be fully supported
Like computers are so hard.
January 7, 2026 at 5:30 PM
Like computers are so hard.
Well, “if you want something done right…”
January 7, 2026 at 5:10 PM
Well, “if you want something done right…”
there has to be a one-hit KO mega man 2 romhack out there somewhere, surely
for reasons
for reasons
January 7, 2026 at 4:44 PM
there has to be a one-hit KO mega man 2 romhack out there somewhere, surely
for reasons
for reasons
Reposted by Mat “Wilto” Marquis
Starting the year with a *banger* by @wil.to
Temporal is the Date system we always wanted in JavaScript. It's extremely close to being available so Mat Marquis thought it would be a good idea to explain exactly what is better about this new JavaScript date system.
piccalil.li/blog/date-is...
piccalil.li/blog/date-is...
Date is out, Temporal is in
Temporal is the Date system we always wanted in JavaScript. It's extremely close to being available so Mat Marquis thought it would be a good idea to explain exactly what is better about this new JavaScript...
piccalil.li
January 7, 2026 at 3:37 PM
Starting the year with a *banger* by @wil.to
Reposted by Mat “Wilto” Marquis
Temporal is the Date system we always wanted in JavaScript. It's extremely close to being available so Mat Marquis thought it would be a good idea to explain exactly what is better about this new JavaScript date system.
piccalil.li/blog/date-is...
piccalil.li/blog/date-is...
Date is out, Temporal is in
Temporal is the Date system we always wanted in JavaScript. It's extremely close to being available so Mat Marquis thought it would be a good idea to explain exactly what is better about this new JavaScript...
piccalil.li
January 7, 2026 at 3:22 PM
Temporal is the Date system we always wanted in JavaScript. It's extremely close to being available so Mat Marquis thought it would be a good idea to explain exactly what is better about this new JavaScript date system.
piccalil.li/blog/date-is...
piccalil.li/blog/date-is...
Around the thirty- or fourtieth time I heard a podcast ad for a “digitial photo frame” over the holidays, I decided to rig up a cheapo display to a Raspberry Pi that mounts a directory on my NAS and cycles through any images it finds in there. “Shitpost robot” is a working title.
January 7, 2026 at 2:51 PM
Around the thirty- or fourtieth time I heard a podcast ad for a “digitial photo frame” over the holidays, I decided to rig up a cheapo display to a Raspberry Pi that mounts a directory on my NAS and cycles through any images it finds in there. “Shitpost robot” is a working title.
Reposted by Mat “Wilto” Marquis
We hope you're rested and ready to learn in 2026. To help with that, we're running a 15% discount on all courses in January.
Use code WINTER15 to save 15% at checkout.
piccalil.li/courses/
Use code WINTER15 to save 15% at checkout.
piccalil.li/courses/
January 6, 2026 at 1:52 PM
We hope you're rested and ready to learn in 2026. To help with that, we're running a 15% discount on all courses in January.
Use code WINTER15 to save 15% at checkout.
piccalil.li/courses/
Use code WINTER15 to save 15% at checkout.
piccalil.li/courses/
Reposted by Mat “Wilto” Marquis
Friendly reminder to use aria-label as a last resort. Use a visual label if you can! And if you need to use an aria-label to add supplementary text to already visual text, make sure the full visual text is included in the aria-label, at the start of the string.
January 5, 2026 at 6:11 PM
Friendly reminder to use aria-label as a last resort. Use a visual label if you can! And if you need to use an aria-label to add supplementary text to already visual text, make sure the full visual text is included in the aria-label, at the start of the string.