VS Code
CodePen
GitHub
Node.js
RegExr
JSFiddle
CodeSandbox
Free ebook for the JS Beginners

Claude Code
aider
Cursor
Ghostty
opencode
GitHub Copilot
Zed
Frontier reasoning in the terminal

Which is more popular?
Based on our record, Eloquent JavaScript should be more popular than OpenAI Codex CLI. It has been mentioned 218 times since March 2021.
Website, pricing, platforms and company facts side by side.
|
EJS
Eloquent JavaScript
|
|
|
|---|---|---|
| Website | eloquentjavascript.net | github.com |
| Pricing | — | |
| Listed in |
What each product offers, as listed by its team.

Possible disadvantages
Possible disadvantages
An editorial look at what each product does well and who it suits.

Overall verdict
Why this product is good
Recommended for
Overall verdict
Why this product is good
Recommended for
Walkthroughs and reviews on video.
Eloquent JavaScript A Modern Introduction to Programming 3rd Edition by Marijn Haverbeke review
More videos
OpenAI Codex CLI
More videos
How often each product is chosen within a category, 0–100% relative to the other.

Share your experience with using Eloquent JavaScript and OpenAI Codex CLI. For example, how are they different and which one is better?
Recommendations tracked on public social media and blogs since March 2021.

If you haven’t read Eloquent JavaScript , go check it out. It’s one of my all-time favourite programming books — hands down. - Source: dev.to / about 1 year ago
Videos, blogs, text-based teachings, YouTube project-based learning, books, and the like are all examples of various methods and mediums of acquiring skills, especially in the software engineering industry. As I continue to navigate... - Source: dev.to / almost 2 years ago
Seconded. I won't recommend it and no one I know has recommended it for a decade. It's hard for someone who doesn't know JS to know which parts has changed and is no longer the way to do things. https://github.com/getify/You-Dont-Know-JS... - Source: Hacker News / about 2 years ago
Codex takes the opposite bet: one product across six surfaces. CLI, IDE extension, Codex Cloud, the ChatGPT app sidebar, mobile (GA May 2026), and a Chrome extension. All of them share your ChatGPT account, your session history, and your... - Source: dev.to / 8 days ago
The second CLI (Codex) records tokens and quota in session files, but the laptop sleeps and moves, so Prometheus can't reliably scrape it. That's exactly the Pushgateway case: a systemd user timer parses the session files every 5 minutes... - Source: dev.to / about 1 month ago
Since when? https://learn.chatgpt.com/docs/codex/cli https://github.com/openai/codex Looks like it's still a more-or-less-open-source product called Codex CLI. FWIW, there have been issues with various versions of ChatGPT not knowing... - Source: Hacker News / about 2 months ago
When comparing Eloquent JavaScript and OpenAI Codex CLI, you can also consider the following products.

Build and debug modern web and cloud applications, by Microsoft
Compare VS Code to Eloquent JavaScript or OpenAI Codex CLI:

Transform hours of debugging into seconds with a single command. Experience coding at thought-speed with Claude's AI that understands your entire codebase—no more context switching, just breakthrough results.
Compare Claude Code to Eloquent JavaScript or OpenAI Codex CLI:

A front end web development playground.
Compare CodePen to Eloquent JavaScript or OpenAI Codex CLI:

aider is AI pair programming in your terminal
Compare aider to Eloquent JavaScript or OpenAI Codex CLI:

Originally founded as a project to simplify sharing code, GitHub has grown into an application used by over a million people to store over two million code repositories, making GitHub the largest code host in the world.
Compare GitHub to Eloquent JavaScript or OpenAI Codex CLI:

The AI-first Code Editor. Build software faster in an editor designed for pair-programming with AI.
Compare Cursor to Eloquent JavaScript or OpenAI Codex CLI: