Introduction to npm
The default Node package registry.
What npm is, why it matters, and how to navigate this track.
npm is a developer tool. The default Node package registry.
What is npm?
npm is a developer tool used across modern software. The default Node package registry.
This track introduces npm from first principles, then goes deeper through the Deep, Reference, and Cheatsheet tabs.
Why learn npm?
- npm is widely used in industry and worth understanding well.
- Each topic pairs a clear explanation with hands-on examples.
- You can revisit any concept in the Reference tab or grab the Cheatsheet for quick recall.
Where it is used
- Day-to-day development
- Collaboration
- Productivity
How this track works
Every topic here has four views, switchable with the tabs at the top of each page:
- Learn — the clear, practical walkthrough you are reading now.
- Deep — every detail: edge cases, the full API, and what is really happening.
- Reference — a scannable, no-fluff lookup for when you already know the shape.
- Cheatsheet — the one-page summary, printable, for quick recall.
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h1–h6 are instances of HTMLHeadingElement. They take no special attributes — only the global set and ARIA — but there’s real depth in how they form the document outline and what you can do with them from JavaScript.
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