Creating an organization on GitHub for JavaScript documentation and expertise can help you build a community, collaborate, and showcase your work. For a GitHub organization focused on JavaScript, there are several key factors to consider in naming and structuring the organization, including a domain and reputation-building.

Here are some ideas for JavaScript-related GitHub organization names that could reflect expertise in the language:

1. JSExperts

   This name indicates that the organization is a hub for JavaScript knowledge and expertise.

2. JavaScriptDocs

   This emphasizes the documentation aspect of the organization and positions it as a resource for learning and reference.

3. JSCommunity

   A good option if you're aiming to create a collaborative environment for JavaScript developers to share and contribute to documentation.

4. NodeDocs

   If you focus on Node.js, this name would indicate an area of expertise in server-side JavaScript.

5. JSGuide

   A name that conveys the idea of offering detailed tutorials, guides, and documentation for JavaScript learners and professionals.

6. ScriptSavvy

   A playful and catchy name that could attract people interested in becoming more proficient with JavaScript.

7. ModernJS

   If your focus is on modern JavaScript features, ES6+, or other recent updates, this name could show you're up-to-date.

8. JavaScriptPatterns

   Perfect if your organization focuses on best practices, design patterns, and efficient JavaScript code.

9. CodeWithJS

   This emphasizes JavaScript as the medium of coding and could appeal to a wide range of developers.

10. JSSolutions

    A practical name indicating that the organization will offer solutions and examples for JavaScript development.