jrlarsen
@jrlarsen.bsky.social
Author of React Hooks in Action and Get Programming with JavaScript. Learner of Japanese and teacher of maths, computing and English. Exploring web components for mathematics education.
Reposted by jrlarsen
The Observatory for Mathematical Education at the @uniofnottingham.bsky.social published their Review of 2025 on Thursday. I spent some time looking at the key messages for secondary maths teachers/leaders.
Read my insights here:
www.twinkl.co.uk/news/analysi...
Read my insights here:
www.twinkl.co.uk/news/analysi...
www.twinkl.co.uk
November 17, 2025 at 6:55 PM
The Observatory for Mathematical Education at the @uniofnottingham.bsky.social published their Review of 2025 on Thursday. I spent some time looking at the key messages for secondary maths teachers/leaders.
Read my insights here:
www.twinkl.co.uk/news/analysi...
Read my insights here:
www.twinkl.co.uk/news/analysi...
Reposted by jrlarsen
My courses will be going on sale for Black Friday! Details:
• The sale begins Monday, November 24th and runs through December 3rd
• CSS for JavaScript Developers will be 40% off (US$399 → US$239)
• The Joy of React will be 42% off (US$599 → US$349)
• Get ‘em both for 50% off (US$998 → US$499) ✨
• The sale begins Monday, November 24th and runs through December 3rd
• CSS for JavaScript Developers will be 40% off (US$399 → US$239)
• The Joy of React will be 42% off (US$599 → US$349)
• Get ‘em both for 50% off (US$998 → US$499) ✨
November 17, 2025 at 4:49 PM
My courses will be going on sale for Black Friday! Details:
• The sale begins Monday, November 24th and runs through December 3rd
• CSS for JavaScript Developers will be 40% off (US$399 → US$239)
• The Joy of React will be 42% off (US$599 → US$349)
• Get ‘em both for 50% off (US$998 → US$499) ✨
• The sale begins Monday, November 24th and runs through December 3rd
• CSS for JavaScript Developers will be 40% off (US$399 → US$239)
• The Joy of React will be 42% off (US$599 → US$349)
• Get ‘em both for 50% off (US$998 → US$499) ✨
Reposted by jrlarsen
maybe worth saying explicitly —
i’m open to working on react again (react docs, or engineering work) if your company wants to sponsor me doing that work remotely from japan.
meta definitely can’t (i’ve asked). at least one company comes to mind that can, but maybe there are others?
i’m open to working on react again (react docs, or engineering work) if your company wants to sponsor me doing that work remotely from japan.
meta definitely can’t (i’ve asked). at least one company comes to mind that can, but maybe there are others?
November 15, 2025 at 8:29 AM
maybe worth saying explicitly —
i’m open to working on react again (react docs, or engineering work) if your company wants to sponsor me doing that work remotely from japan.
meta definitely can’t (i’ve asked). at least one company comes to mind that can, but maybe there are others?
i’m open to working on react again (react docs, or engineering work) if your company wants to sponsor me doing that work remotely from japan.
meta definitely can’t (i’ve asked). at least one company comes to mind that can, but maybe there are others?
Gary Numan at City Hall Newcastle.
November 12, 2025 at 10:53 PM
Gary Numan at City Hall Newcastle.
Reposted by jrlarsen
i'm looking for a new job
Hire Me in Japan — overreacted
I'm looking for a new job.
overreacted.io
November 10, 2025 at 3:31 PM
i'm looking for a new job
Reposted by jrlarsen
London CPD 26 Nov – turn data into strategy. Book now at completemaths.com/community/be...
@aqaeducation.bsky.social
@naveenfrizvi.bsky.social
@aqaeducation.bsky.social
@naveenfrizvi.bsky.social
November 8, 2025 at 6:00 PM
London CPD 26 Nov – turn data into strategy. Book now at completemaths.com/community/be...
@aqaeducation.bsky.social
@naveenfrizvi.bsky.social
@aqaeducation.bsky.social
@naveenfrizvi.bsky.social
Reposted by jrlarsen
Can anyone suggest any reading (blogs, posts, research etc) on "being a good maths key stage 5 lead"? Any guidance/best practice/communities/things to have in place would be greatly appreciated! #UKMathsChat #MathsToday
November 7, 2025 at 10:49 PM
Can anyone suggest any reading (blogs, posts, research etc) on "being a good maths key stage 5 lead"? Any guidance/best practice/communities/things to have in place would be greatly appreciated! #UKMathsChat #MathsToday
Reposted by jrlarsen
Journal: Providers
Web browsers provide you with great features for free. Why would you choose to use tools that stop you taking advantage of that?
🔗https://adactio.com/journal/22235
Web browsers provide you with great features for free. Why would you choose to use tools that stop you taking advantage of that?
🔗https://adactio.com/journal/22235
November 6, 2025 at 4:14 PM
Journal: Providers
Web browsers provide you with great features for free. Why would you choose to use tools that stop you taking advantage of that?
🔗https://adactio.com/journal/22235
Web browsers provide you with great features for free. Why would you choose to use tools that stop you taking advantage of that?
🔗https://adactio.com/journal/22235
Reposted by jrlarsen
INTERVIEW WITH THE VAMPIRE
SECOND INTERVIEW WITH THE VAMPIRE OVER ZOOM TO MEET MORE OF THE TEAM
UNFORTUNATELY, YOU HAVE NOT BEEN SUCCESSFUL ON THIS OCCASION, BUT WE HOPE YOU'LL APPLY FOR FUTURE POSITIONS WITH THE VAMPIRE
SECOND INTERVIEW WITH THE VAMPIRE OVER ZOOM TO MEET MORE OF THE TEAM
UNFORTUNATELY, YOU HAVE NOT BEEN SUCCESSFUL ON THIS OCCASION, BUT WE HOPE YOU'LL APPLY FOR FUTURE POSITIONS WITH THE VAMPIRE
November 1, 2025 at 6:34 AM
INTERVIEW WITH THE VAMPIRE
SECOND INTERVIEW WITH THE VAMPIRE OVER ZOOM TO MEET MORE OF THE TEAM
UNFORTUNATELY, YOU HAVE NOT BEEN SUCCESSFUL ON THIS OCCASION, BUT WE HOPE YOU'LL APPLY FOR FUTURE POSITIONS WITH THE VAMPIRE
SECOND INTERVIEW WITH THE VAMPIRE OVER ZOOM TO MEET MORE OF THE TEAM
UNFORTUNATELY, YOU HAVE NOT BEEN SUCCESSFUL ON THIS OCCASION, BUT WE HOPE YOU'LL APPLY FOR FUTURE POSITIONS WITH THE VAMPIRE
Reposted by jrlarsen
Web Components! This post by @zachleat.com is a good example of a case where it can make fine sense to use an empty custom element that doesn't need to wrap already-functional/meaningful HTML. Those cases tend to be the exception in my experience/preference though!
www.zachleat.com/web/copy-pas...
www.zachleat.com/web/copy-pas...
Copy *and* Paste? …in this Economy?—zachleat.com
A post by Zach Leatherman (zachleat)
www.zachleat.com
October 30, 2025 at 3:35 PM
Web Components! This post by @zachleat.com is a good example of a case where it can make fine sense to use an empty custom element that doesn't need to wrap already-functional/meaningful HTML. Those cases tend to be the exception in my experience/preference though!
www.zachleat.com/web/copy-pas...
www.zachleat.com/web/copy-pas...
Reposted by jrlarsen
I am looking for a full-time job.
Being independent in open source for 3.5+ years has been wonderful. I've gotten done most of the high-level goals I wanted to, and miss having people & structure around me.
If you know of a role for a staff-level TypeScript+web developer, let me know! 🙂
Being independent in open source for 3.5+ years has been wonderful. I've gotten done most of the high-level goals I wanted to, and miss having people & structure around me.
If you know of a role for a staff-level TypeScript+web developer, let me know! 🙂
October 30, 2025 at 2:40 PM
I am looking for a full-time job.
Being independent in open source for 3.5+ years has been wonderful. I've gotten done most of the high-level goals I wanted to, and miss having people & structure around me.
If you know of a role for a staff-level TypeScript+web developer, let me know! 🙂
Being independent in open source for 3.5+ years has been wonderful. I've gotten done most of the high-level goals I wanted to, and miss having people & structure around me.
If you know of a role for a staff-level TypeScript+web developer, let me know! 🙂
Reposted by jrlarsen
I signed up for “Web Components Demystified” by @scottjehl.com and I can't wait to dig in.
This week you can get it for 25$, which is an absolute steal, using the code OCT25-26.
webcomponentsdemystified.thinkific.com/courses/web-...
This week you can get it for 25$, which is an absolute steal, using the code OCT25-26.
webcomponentsdemystified.thinkific.com/courses/web-...
Web Components Demystified
A comprehensive, premium course about building dynamic, fast, resilient apps with standard web components.
webcomponentsdemystified.thinkific.com
October 29, 2025 at 5:19 PM
I signed up for “Web Components Demystified” by @scottjehl.com and I can't wait to dig in.
This week you can get it for 25$, which is an absolute steal, using the code OCT25-26.
webcomponentsdemystified.thinkific.com/courses/web-...
This week you can get it for 25$, which is an absolute steal, using the code OCT25-26.
webcomponentsdemystified.thinkific.com/courses/web-...
Reposted by jrlarsen
Waku v0.27.0 is here!
Waku is a React Server Component framework built to make React development fun again.
Now stabilizing the public API as we prepare for the v1 alpha, so it's a perfect time to try it and share your feedback before we finalize things. waku.gg/blog/more-ex...
Waku is a React Server Component framework built to make React development fun again.
Now stabilizing the public API as we prepare for the v1 alpha, so it's a perfect time to try it and share your feedback before we finalize things. waku.gg/blog/more-ex...
Waku, the minimal React framework
A lightweight alternative React framework with a fun developer experience. Loved by React developers at startups and agencies.
waku.gg
October 27, 2025 at 12:58 PM
Waku v0.27.0 is here!
Waku is a React Server Component framework built to make React development fun again.
Now stabilizing the public API as we prepare for the v1 alpha, so it's a perfect time to try it and share your feedback before we finalize things. waku.gg/blog/more-ex...
Waku is a React Server Component framework built to make React development fun again.
Now stabilizing the public API as we prepare for the v1 alpha, so it's a perfect time to try it and share your feedback before we finalize things. waku.gg/blog/more-ex...
Reposted by jrlarsen
AQA - now in partnership with Dr Frost Maths.
We’ve teamed up with Dr Frost Maths, the award-winning online platform for students up to age 18, to make AQA exam preparation simpler and more effective.
Discover your new maths tools: https://ow.ly/1lge50Xihim
We’ve teamed up with Dr Frost Maths, the award-winning online platform for students up to age 18, to make AQA exam preparation simpler and more effective.
Discover your new maths tools: https://ow.ly/1lge50Xihim
October 27, 2025 at 2:03 PM
AQA - now in partnership with Dr Frost Maths.
We’ve teamed up with Dr Frost Maths, the award-winning online platform for students up to age 18, to make AQA exam preparation simpler and more effective.
Discover your new maths tools: https://ow.ly/1lge50Xihim
We’ve teamed up with Dr Frost Maths, the award-winning online platform for students up to age 18, to make AQA exam preparation simpler and more effective.
Discover your new maths tools: https://ow.ly/1lge50Xihim
Reposted by jrlarsen
Decided to keep this coupon active for the week 👍
October 27, 2025 at 3:40 AM
Decided to keep this coupon active for the week 👍
Reposted by jrlarsen
Online on a weekend? You can grab access to my web components course for $25 today and tomorrow. Big ol’ discount. Use the code OCT25-26.
(And as usual, if you need further accommodation, just use the email form and we’ll work it out.)
scottjehl.com/learn/webcom...
(And as usual, if you need further accommodation, just use the email form and we’ll work it out.)
scottjehl.com/learn/webcom...
Web Components Demystified online course | Scott Jehl, Web Designer/Developer
A comprehensive, premium course about building dynamic, fast, resilient apps with standard web components.
scottjehl.com
October 25, 2025 at 2:59 PM
Online on a weekend? You can grab access to my web components course for $25 today and tomorrow. Big ol’ discount. Use the code OCT25-26.
(And as usual, if you need further accommodation, just use the email form and we’ll work it out.)
scottjehl.com/learn/webcom...
(And as usual, if you need further accommodation, just use the email form and we’ll work it out.)
scottjehl.com/learn/webcom...
Seconded! A great course and a bargain to boot.
I got access shortly after Scott's course launched and it is hands down the best course on web components I have seen. Beginner-friendly yet covers all the ground you need to get started with web components.
Can't recommend it enough.
Can't recommend it enough.
Online on a weekend? You can grab access to my web components course for $25 today and tomorrow. Big ol’ discount. Use the code OCT25-26.
(And as usual, if you need further accommodation, just use the email form and we’ll work it out.)
scottjehl.com/learn/webcom...
(And as usual, if you need further accommodation, just use the email form and we’ll work it out.)
scottjehl.com/learn/webcom...
October 25, 2025 at 4:32 PM
Seconded! A great course and a bargain to boot.
Reposted by jrlarsen
London CPD 26 Nov. Learn to act on data strategically. Book now at completemaths.com/community/be...
@naveenfrizvi.bsky.social @aqaeducation.bsky.social
@naveenfrizvi.bsky.social @aqaeducation.bsky.social
October 22, 2025 at 5:03 PM
London CPD 26 Nov. Learn to act on data strategically. Book now at completemaths.com/community/be...
@naveenfrizvi.bsky.social @aqaeducation.bsky.social
@naveenfrizvi.bsky.social @aqaeducation.bsky.social
Reposted by jrlarsen
My book, React Hooks in Action, is now available in LiveAudio format from @manning.com
Get 40% off with code lahooks40
www.manning.com/books/react-...
Get 40% off with code lahooks40
www.manning.com/books/react-...
October 22, 2025 at 7:39 AM
My book, React Hooks in Action, is now available in LiveAudio format from @manning.com
Get 40% off with code lahooks40
www.manning.com/books/react-...
Get 40% off with code lahooks40
www.manning.com/books/react-...
My book, React Hooks in Action, is now available in LiveAudio format from @manning.com
Get 40% off with code lahooks40
www.manning.com/books/react-...
Get 40% off with code lahooks40
www.manning.com/books/react-...
October 22, 2025 at 7:39 AM
My book, React Hooks in Action, is now available in LiveAudio format from @manning.com
Get 40% off with code lahooks40
www.manning.com/books/react-...
Get 40% off with code lahooks40
www.manning.com/books/react-...
Reposted by jrlarsen
Sometimes you only want a field to show when certain other fields have a (particular) value. The `form-show-if` web component enables that.
A Web Component for Conditionally Displaying Fields :: Aaron Gustafson
Building on my recent work in the form utility space, I’ve created a new web component that allows you to conditionally display form fields based on the values of other fields: form-show-if.
www.aaron-gustafson.com
October 21, 2025 at 12:46 PM
Sometimes you only want a field to show when certain other fields have a (particular) value. The `form-show-if` web component enables that.
Reposted by jrlarsen
Excitingly, Today's the opening day of MathsWorld, the new hands-on maths museum in London. I've really enjoyed visiting MathsCity in Leeds, but they've now got a London location too! Details at mathsworld.com
MathsWorld – London’s new Museum of Mathematics
MathsWorld is an interactive museum in London with innovative hands-on exhibits that explore the beauty, wonder, and everyday relevance of mathematics for visitors of all ages.
mathsworld.com
October 18, 2025 at 10:01 AM
Excitingly, Today's the opening day of MathsWorld, the new hands-on maths museum in London. I've really enjoyed visiting MathsCity in Leeds, but they've now got a London location too! Details at mathsworld.com
Reposted by jrlarsen
October 17, 2025 at 10:44 AM