jrlarsen
jrlarsen.bsky.social
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.
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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
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London CPD 26 Nov – turn data into strategy. Book now at completemaths.com/community/be...

@aqaeducation.bsky.social
@naveenfrizvi.bsky.social
November 8, 2025 at 6:00 PM
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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
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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
November 6, 2025 at 4:14 PM
250
November 1, 2025 at 8:48 PM
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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
November 1, 2025 at 6:34 AM
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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...
Copy *and* Paste? …in this Economy?—zachleat.com
A post by Zach Leatherman (zachleat)
www.zachleat.com
October 30, 2025 at 3:35 PM
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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! 🙂
October 30, 2025 at 2:40 PM
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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-...
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
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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, 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
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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
October 27, 2025 at 2:03 PM
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Decided to keep this coupon active for the week 👍
October 27, 2025 at 3:40 AM
Luke Browning is a great addition to the commentary team for #F1 today. Good job!
October 25, 2025 at 6:10 PM
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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...
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
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.
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...
October 25, 2025 at 4:32 PM
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London CPD 26 Nov. Learn to act on data strategically. Book now at completemaths.com/community/be...

@naveenfrizvi.bsky.social @aqaeducation.bsky.social
October 22, 2025 at 5:03 PM
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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-...
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-...
October 22, 2025 at 7:39 AM
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
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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
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NEW BLOG: The Quiet Shape of Grief

www.emaths.co.uk/blog/persona...
October 17, 2025 at 10:44 AM
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Okay, for the folks who asked: here's the majority AI view, writing up the reasonable, thoughtful view on AI that the vast majority of people in tech hold, that gets overshadowed by the bluster and hype of the tycoons trying to shill their nonsense. anildash.com/2025/10/17/t... Please share!
The Majority AI View - Anil Dash
A blog about making culture. Since 1999.
anildash.com
October 17, 2025 at 7:29 PM
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😮 Alex is one of the best people I can think of to do a show like this!

Such a great idea. Excited to check this out. 😄
This is the most personal project I’ve made in years.

I launched a new show called The Callback. It’s weekly web dev news with my dumb humor sprinkled on top.

If this pilot does well I get to make more, so watching, liking, and sharing would be DEEPLY appreciated 💜

www.youtube.com/watch?v=eMOD...
Remix needs to fix this…
YouTube video by Prismic
www.youtube.com
October 17, 2025 at 8:29 PM
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I just joined the @quietui.org Insider program! I encourage you to do the same - @cory.laviska.com is a wealth spring of knowledge and is a genuine joy to chat with.

You won't regret it:

quietui.org/support
Support · Quiet UI
Get help and support the project.
quietui.org
October 17, 2025 at 5:47 PM
Reposted by jrlarsen
Does anyone teach #coremaths OCR B? First year teaching this and finding it challenging, could really use some advice from someone who has taught it before.
October 17, 2025 at 5:19 PM