mdn.io

.io crawl

First seen 2026-04-11 · Last seen 2026-04-28 · ok HTTP/1.1 200 890 ms crawled 2026-04-28

US · 172.67.217.160 · AS13335 Cloudflare, Inc.

Reputation 100/100

Classifying

HTML metadata

Title
JavaScript | MDN
Description
JavaScript (JS) is a lightweight interpreted (or just-in-time compiled) programming language with first-class functions. While it is most well-known as the scripting language for Web pages, many non-browser environments also use it, such as Node.js, Apache CouchDB and Adobe Acrobat. JavaScript is a prototype-based, garbage-collected, dynamic language, supporting multiple paradigms such as imperative, functional, and object-oriented.
Language
en-US
Canonical
https://developer.mozilla.org/en-US/docs/Web/JavaScript
Feeds

Technology

Server
Google
CMS
Gatsby

Third-party hosts loaded (2)

  • developer.mozilla.org×29
  • transcend-cdn.com×1

Social

Contact

Address
st modified onOct 2, 2025

Certificate (current)

WE1
from 2026-04-05 to 2026-07-04
Expires in 46 days

Links to (9)

Linked from (1)