TheCyperpunk

Add comprehensive code examples for JavaScript concepts

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## 🎯 Description This PR addresses **Issue #618: Add Examples** by adding comprehensive, runnable JavaScript code examples for the 33 JavaScript concepts. ## ✨ What's Included ### Code Examples (13...

fix(a11y): add Space key support for navbar dropdowns

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## Pre-flight checklist - [x] I have read the [Contributing Guidelines on pull requests](https://github.com/facebook/docusaurus/blob/main/CONTRIBUTING.md#pull-requests). - [x] **If this is a code change**: I have written unit tests and/or added dogfooding...