codemirror

codemirror5

JavaScript2014–2019

codemirror / codemirror5 · Archived

codemirror5

In-browser code editor (version 5, legacy)

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6Distinct people

6Mentions

0Explicit recommenders

27.2KGitHub stars

REPOSITORY AT A GLANCE

What to know before exploring

What it is

In-browser code editor (version 5, legacy)

GitHub

Where it is used

No documented product use has been verified yet.

What people are saying

No recommendation phrase was found in the indexed comments.

No classified warning is attached to this page. Read the discussions before treating silence as approval.

Also in these discussions

No other repository is repeatedly linked in the same discussions.

This week on Hacker News

Nov 7–Nov 14 UTC · Direct repository links and separately labeled related project stories. Indexed through 11/14/2026, 1:49:46 PM UTC.

No direct repository links were found in the indexed HN discussions over the past seven days. Older discussions are available below.

Mentions over time

HN mentions by year6 dated mentions

Observed mentions: 2014-12-08 13:42:31 UTC to 2019-07-30 07:47:22 UTC.

Counts come from the repository’s dated source evidence. Index cutoff: 2026-11-02 08:16:59 UTC.

View mention counts and date ranges

UTC ranges include their start and exclude their end. Select a period to filter the source evidence.
Period	Start (UTC)	End (exclusive, UTC)	Mentions	Comments
2014	2014-01-01 00:00:00 UTC	2015-01-01 00:00:00 UTC	1	1
2015	2015-01-01 00:00:00 UTC	2016-01-01 00:00:00 UTC	2	2
2016	2016-01-01 00:00:00 UTC	2017-01-01 00:00:00 UTC	0	0
2017	2017-01-01 00:00:00 UTC	2018-01-01 00:00:00 UTC	0	0
2018	2018-01-01 00:00:00 UTC	2019-01-01 00:00:00 UTC	0	0
2019	2019-01-01 00:00:00 UTC	2020-01-01 00:00:00 UTC	3	3

What Hacker News says

6 sources

lol768·Jul 30, 2019

For context, see this GitHub issue: https://github.com/codemirror/CodeMirror/issues/4937 Author is unwilling to change a handful lines of code to make the package compatible with a strict style-src. Why does this matter? You can exfiltrate data such as CSRF tokens using inline styles from a HTML injection vulnerability: https://medium.com/bugbountywriteup/exfiltration-via-css-inj...

In Ask HN: What are the “best” codebases that you've encountered?

bijection·Jul 29, 2019

The Codemirror codebase [0] is simply written and richly commented, and using Codemirror itself in a project is a pleasure. Tellingly, Marijn Haverbeke, Codemirror's creator, is also the author of the excellent 'Eloquent Javascript' [1]. [0] https://github.com/codemirror/codemirror [1] http://eloquentjavascript.net/

In Ask HN: What are the “best” codebases that you've encountered?

qrohlf·Apr 2, 2019

I've been following this space for some time [1], and for me the constant struggle has been finding something that is both batteries-included, so I don't have to build a usable editor from primitives on projects where the core differentiator is not related to how content gets authored, and mobile-friendly, so that I don't have weird capslock bugs on iOS [2], completely broken Android support [3], and just general mobile weirdness [4]. To the best of my knowledge, Prosemirror has been most willing to prioritize mobile support, and currently has the best mobile browser coverage of the three most commonly mentioned modern contentEditable options (prosemirror, draft-js, quill). Unfortunately, building an editor with Prosemirror is a very hands-on process that requires you to make all the UI decisions and most of the UX decisions yourself, whi

Read the rest

ch isn't a great fit for most projects that don't need to innovate in the actual content creation side of things. I would LOVE it if a batteries-included editor like this, which clearly had a lot of thought put into the UX and UI aspects, was built on the very-robust technical foundation of Prosemirror (or similar). There are a few efforts at this on GitHub, but nothing so far with more than one or two contributors that I've found. The backend of editor.js looks solid, but without any discussion of mobile IME support, and without the backing of big players like NYT [5], realistically I can only guess that mobile support for editor.js will end up similar to the well-intentioned but partially complete mobile support found in other smaller projects like quill, slate, etc. [1] https://news.ycombinator.com/item?id=14417624 [2] https://github.com/codemirror/CodeMirror/issues/3403 [3] http://engineering.mindlinksoft.com/why-draftjs-doesnt-work-... [4] https://github.com/ianstormtaylor/slate/issues/2062 [5] https://open.nytimes.com/building-a-text-editor-for-a-digita...

In Editor.js – Block Styled Editor

akanet·Dec 4, 2015

We also just added Swift support over at https://coderpad.io for anyone that wants to run swift during interviews. Amjad, I got started filing some issues against codemirror for better Swift support :) https://github.com/codemirror/CodeMirror/issues/3680

In Introducing the IBM Swift Sandbox

leeoniya·Feb 25, 2015

in case anyone missed it, it's by the author of CodeMirror [1], Acorn, Tern, etc. [2]. He also contributes to Rust. [1] https://github.com/codemirror/codemirror [2] https://github.com/marijnh

In Higher-Order Functions in JavaScript

zackham·Dec 8, 2014

Might give https://github.com/codemirror/codemirror a try if you really want to go down the syntax highlighting path. Shouldn't be too hard to adapt it to exactly what you're looking to do.

In Squire: FastMail’s rich text editor