Peter Kassenaar

Sr. Frontend Developer & trainer | Author | Posts in Dutch and English | board & card games | chess.com player.

Peter KassenaarPeterKassenaar
2025-10-06

So much for Google Gemini CLI...

Peter KassenaarPeterKassenaar
2025-10-03

Wow! I'm in the top-3 of a community map ('Holey Poles practice') on .

Peter KassenaarPeterKassenaar
2025-10-01

Yeez, new icons. Not again!

Peter KassenaarPeterKassenaar
2025-10-01

It hurts my pride as a programmer, but I have to admit that Gemini AI agent updates and suggests things that I had overlooked in a large code repository.

Peter KassenaarPeterKassenaar
2025-09-29

Last week, 30 years ago, Netscape Navigator 2.0 was released. The first browser to feature JavaScript, plugins, and (useful) animated gifs. jwz.org/blog/2025/09/netscape-

Peter KassenaarPeterKassenaar
2025-09-23

Succes.

Peter KassenaarPeterKassenaar
2025-09-21

Proud of daughter #1, who rode a bicycling ride today further than she's done before. Heavy wind, some rain. Lifetime experience.

Peter KassenaarPeterKassenaar
2025-09-19

So, LinkedIn will also be using your data (posts, reactions, etc) to train their AI models. You can opt-out here: linkedin.com/mypreferences/d/s

Peter KassenaarPeterKassenaar
2025-09-16

Today in 100 days it's Christmas.

Peter KassenaarPeterKassenaar
2025-09-14

Het wordt er allemaal niet gezelliger op.

Peter KassenaarPeterKassenaar
2025-09-06

Donated to @wikipedia since in this age of hallucinating AI and purposeful misinformation, we need an unbiased and trustworthy source of information.

Please consider donating also.

Peter KassenaarPeterKassenaar
2025-09-04

For a some backgrounds on development of Google Chrome, see this excellent post by Addy Osmani : addyosmani.com/blog/chrome-17t

Peter KassenaarPeterKassenaar
2025-09-04

Google Chrome is 17 years old this week. Today, 17 years ago, I wrote this 'first impressions' blogpost. (In Dutch, but Google Translate will do its job :-).

kassenaar.com/blog/post/2008/0

Peter KassenaarPeterKassenaar
2025-08-29

11.5 years in on . 2000 activities today.

Peter KassenaarPeterKassenaar
2025-08-29

@peterdoolaard @fronteers Ja, spijtig inderdaad. Ik had leuke en waardevolle content klaar liggen (al zeg ik het zelf).

Peter KassenaarPeterKassenaar
2025-08-27
Peter KassenaarPeterKassenaar
2025-08-27
Peter Kassenaar boosted:
2025-08-26

🧠 In 4 uur leer je o.a.:

✅ Destructuring
✅ Spread & Rest
✅ Async/await
✅ Debuggen met logpunten
✅ AI in DevTools

En meer. Schrijf je in!
Vanaf € 69,- 👉 ti.to/fronteers/javascript-tip

#JavaScript #frontend

Peter KassenaarPeterKassenaar
2025-08-23

Daughter #1 is on Google Streetview! The Google Car came by while she was taking a rest stop during a bicycle ride.

Peter KassenaarPeterKassenaar
2025-08-16

The world needs more Steves like Woz. Not the other one.
From: @m2m
sonomu.club/@m2m/1150336855122

Client Info

Server: https://mastodon.social
Version: 2025.07
Repository: https://github.com/cyevgeniy/lmst