javascript.info
Registered
Page analyze update date:
2026/03/30 20:58:28
Last whois update date:
2026/01/26 11:27:49
Domain Status
Registered
Paid till
21.09.2026
Available from
21.10.2026
×
![Fullscreen website screenshot]()
javascript.info Website screenshot
SEO Score
61.64%
90
Score achieved
146
Maximum score
Main Information
Title: The Modern JavaScript Tutorial
Description: Modern JavaScript Tutorial: simple, but detailed explanations with examples and tasks, including: closures, document and events, object oriented programming and more.
Keywords: empty
Page Encoding:
unknown
Body and server charset are different!
Page Filesize: 57 KB
Server Information
IP: 104.26.12.17
Location: ,,,,,,
Http Server: cloudflare
Encoding: utf-8
Meta Tags List
- equiv: origin-trial content: A7vZI3v+Gz7JfuRolKNM4Aff6zaGuT7X0mf3wtoZTnKv6497cVMnhy03KDqX7kBz/q/iidW7srW31oQbBt4VhgoAAACUeyJvcmlnaW4iOiJodHRwczovL3d3dy5nb29nbGUuY29tOjQ0MyIsImZlYXR1cmUiOiJEaXNhYmxlVGhpcmRQYXJ0eVN0b3JhZ2VQYXJ0aXRpb25pbmczIiwiZXhwaXJ5IjoxNzU3OTgwODAwLCJpc1N1YmRvbWFpbiI6dHJ1ZSwiaXNUaGlyZFBhcnR5Ijp0cnVlfQ==
- name: viewport content: width=device-width, initial-scale=1, user-scalable=no, minimum-scale=1.0
- name: apple-mobile-web-app-capable content: yes
- name: msapplication-TileColor content: #222A2C
- name: msapplication-TileImage content: /img/favicon/tileicon.png
- itemprop: image content: https://javascript.info/img/site_preview_en_512x512.png
- property: og:title content: The Modern JavaScript Tutorial
- property: og:image content: https://javascript.info/img/site_preview_en_1200x630.png
- property: og:image:type content: image/png
- property: og:image:width content: 1200
- property: og:image:height content: 630
- property: fb:admins content: 100001562528165
- name: twitter:card content: summary
- name: twitter:title content: The Modern JavaScript Tutorial
- name: twitter:site content: @iliakan
- name: twitter:creator content: @iliakan
- name: twitter:image content: https://javascript.info/img/site_preview_en_512x512.png
- name: google-adsense-account content: ca-pub-6204518652652613
- name: description content: Modern JavaScript Tutorial: simple, but detailed explanations with examples and tasks, including: closures, document and events, object oriented programming and more.
Internal Links
External Links
Whois Information
domain_name: javascript.info
update_date: 2025-08-27T04:04:52.092Z
update_time: 1756267492
creation_date: 2001-09-21T03:49:14.017Z
creation_time: 1001044154
expiration_date: 2026-09-21T03:49:14.017Z
Whois Raw Data
Domain Name: JAVASCRIPT.INFO
Registrar: Cloudflare, Inc
Domain Status: client transfer prohibited
Registry Expiry Date: 2026-09-21T03:49:14.017Z
Creation Date: 2001-09-21T03:49:14.017Z
Updated Date: 2025-08-27T04:04:52.092Z
Name Server: INES.NS.CLOUDFLARE.COM
Name Server: DAMON.NS.CLOUDFLARE.COM
REGISTRAR Contact: Cloudflare, Inc
>>> Last update of RDAP database: 2026-01-26T14:27:49Z
Robots.txt
User-agent: *
Disallow: /node/
Disallow: /users/
Disallow: /content/
Disallow: /play/
Disallow: /profile/
SEO Audit
Technical SEO
✓
Response Code
200
Status 200 OK - page loads correctly.
!
Character Encoding
Page: , Header: utf-8
Character encoding mismatch between HTML and HTTP headers.
✓
Page Size
59126 bytes
Page size acceptable for fast loading.
✓
Resources
22 total
Moderate number of resources. Consider combining files.
✓
Hreflang Tags
0 hreflang tags
Add hreflang tags if you have multilingual content.
✓
Robots.txt
Exists
Robots.txt file found.
!
Sitemap
Not found
Add sitemap.xml and reference it in robots.txt.
✓
HTTPS
Yes
Secure HTTPS connection enabled.
!
Compression
br
Enable gzip or zstd compression to reduce file sizes.
!
Caching
Not set
Add cache-control headers to improve loading speed for returning visitors.
✓
Page Speed
5.84 ms
Excellent loading speed.
On-Page SEO
✓
Title
The Modern JavaScript Tutorial
Good title length (30-60 characters).
!
Meta Description
Modern JavaScript Tutorial: simple, but detailed explanations with examples and tasks, including: closures, document and events, object oriented programming and more. Lenght:166
Meta description too long. Reduce to 100-160 characters.
✓
H1 Heading
1 found - "The Modern JavaScript Tutorial"
Good - single H1 heading found.
!
Word Count
263
Content very short. Aim for at least 500 words for better SEO.
!
Canonical Tag
Add canonical tag to prevent duplicate content issues.
✓
Duplicate Meta
[]
No duplicate meta tags found.
✓
Keywords
empty
Meta keywords set (note: not used by major search engines).
Content and UX
✓
Language
en
Language attribute properly set.
!
Images
4 total, 4 missing ALT
Add ALT text to images for accessibility and SEO.
✓
Viewport
width=device-width, initial-scale=1, user-scalable=no, minimum-scale=1.0
Viewport meta tag properly set for mobile devices.
!
Open Graph
Missing: og:description, og:url
Add missing OpenGraph tags for social media sharing: og:description, og:url
✓
Structured Data
1 JSON-LD scripts
Structured data (JSON-LD) found.
Positions in Google
Search Phrases - Google
| Position | Phrase | Page | Snippet |
|---|---|---|---|
| 3 | /types | ||
| 4 | / | ||
| 4 | /task/array-negative | ||
| 5 | /constructor-new | ||
| 5 | / | ||
| 6 | /class | ||
| 7 | /date | ||
| 8 | /regexp-unicode | ||
| 9 | /map-set | ||
| 9 | /array |
Positions in Yandex
Search Phrases - Yandex
| Position | Phrase | Page | Snippet |
|---|---|---|---|
| 7 | /instanceof | ||
| 9 | /object-methods |