standard/eslint-config-standard-react

Airbnb JavaScript Style Guide is a public reference of JavaScript coding conventions maintained in the airbnb/javascript GitHub repository, covering rules for types, references, objects, arrays, destructuring, strings, and functions, among other topics. Most guidelines cite a matching ESLint rule and show bad-versus-good code side by side, and the project also links companion guides for React and CSS-in-JavaScript.

33 JavaScript Concepts organizes core JavaScript topics -- from primitive types to the event loop to design patterns -- into a linked list of focused explanations with code examples, aimed at developers filling gaps in their fundamentals.

freeCodeCamp is a free, self-paced curriculum for learning to code, published as open source at freeCodeCamp/freeCodeCamp. It's a 501(c)(3) nonprofit funded by donor support, structured around six certifications in its Full-Stack Developer Curriculum, each gated by required projects instead of open-book quizzes. The repository also carries beta language certifications for developers, interview-prep resources, and the code that runs the live freecodecamp.org platform.

Electron (electron/electron on GitHub) is an open-source, MIT-licensed framework for building cross-platform desktop apps with JavaScript, HTML, and CSS on top of Node.js and Chromium. The README covers installing it as a dev dependency through npm, lists platform support for macOS, Windows, and Linux, and points to a companion tool, Electron Fiddle, for trying the API before starting a full project.