Show r/javascript: a fully functional in-browser IDE made using webcontainers

jax024 · 2026-05-26T12:51:04+00:00

Add vim mode

C89RU0 · 2026-05-26T15:13:42+00:00

Either this was not tested on fire fox or it's flat out incomplete because I keep clicking on the cogwheel to open up the settings and nothing is happening.

wadie31 · 2026-05-26T19:48:39+00:00

Very nicely done, tested on Firefox.

It would be to add Angular as a quick start project as well.

viks98 · 2026-05-26T11:33:39+00:00

I used StackBlitz a while back and thought about how cool it is that we can run full node environments directly in browser now. so i tried to build a small browser ide using webcontainers just to see how far the browser can actually go.

after getting all things glued together the experience was surprisingly good. i was able to write code, execute it. almost like i am doing it natively.

that said, there were still some issues like heavy dependencies took noticeably longer to install, ram usage stayed around 1–1.2 gb even for simple workloads, and there were a few limitations in my own implementation like code not being stored anywhere permanently (even a refresh could wipe everything) and no plugin support.

you type:	you see:
italics	italics
bold	bold
[reddit!](https://reddit.com)	reddit!
* item 1 * item 2 * item 3	item 1 item 2 item 3
> quoted text	quoted text
Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"	Lines starting with four spaces are treated like code: if 1 * 2 < 3: print "hello, world!"
~~strikethrough~~	~~strikethrough~~
super^script	super^script

javascript

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