Format JavaScript Code Snippets

I have a batch of JavaScript code snippets that need to be reformatted and polished for publication in our knowledge base. The raw snippets already exist; what I need from you is clean, consistently indented code with proper syntax highlighting markers, concise inline comments, and short explanatory headings so the snippets drop straight into our Markdown-based docs without further touch-ups.

Because these updates feed a live product manual, speed matters—I’d like the first set turned around as soon as you can, and I’ll keep sending additional snippets in small groups until the section is complete. If you’re comfortable applying standard JavaScript best practices, spotting minor logic or lint issues on the fly, and working quickly while keeping a clear commit history, you’re exactly who I’m after.

Deliverables (per snippet):
• Reformatted JavaScript code block ready for Markdown
• One-line description of the snippet’s purpose
• Brief comment annotations where clarity helps future readers

I’ll supply the existing snippets and our short style guide the moment we start, and I’m available for rapid feedback so you can move fast without rework.