René's URL Explorer Experiment

Title: GitHub - sysdba/30DaysOfJavaScript: A 30 days of JavaScript programming challenge · GitHub

Open Graph Title: GitHub - sysdba/30DaysOfJavaScript: A 30 days of JavaScript programming challenge

X Title: GitHub - sysdba/30DaysOfJavaScript: A 30 days of JavaScript programming challenge

Description: A 30 days of JavaScript programming challenge. Contribute to sysdba/30DaysOfJavaScript development by creating an account on GitHub.

Open Graph Description: A 30 days of JavaScript programming challenge. Contribute to sysdba/30DaysOfJavaScript development by creating an account on GitHub.

X Description: A 30 days of JavaScript programming challenge. Contribute to sysdba/30DaysOfJavaScript development by creating an account on GitHub.

Opengraph URL: https://github.com/sysdba/30DaysOfJavaScript

X: @github

direct link

Domain: github.com

route-pattern	/:user_id/:repository/tree/name(/path)
route-controller	files
route-action	disambiguate
fetch-nonce	v2:fa54b7ae-eace-6ee6-2f2f-73a9f2ec7e34
current-catalog-service-hash	f3abb0cc802f3d7b95fc8762b94bdcb13bf39634c40c357301c4aa1d67a256fb
request-id	DD62:1C3DD7:107E0D9:1621D55:6A529911
html-safe-nonce	dbdeea3d0799e013bd2a2c6b663674997983e8559305c1ec3528619d6a58ed5f
visitor-payload	eyJyZWZlcnJlciI6IiIsInJlcXVlc3RfaWQiOiJERDYyOjFDM0RENzoxMDdFMEQ5OjE2MjFENTU6NkE1Mjk5MTEiLCJ2aXNpdG9yX2lkIjoiMzg1OTI4NTQ0NDc4NDY4MzY5IiwicmVnaW9uX2VkZ2UiOiJpYWQiLCJyZWdpb25fcmVuZGVyIjoiaWFkIn0=
visitor-hmac	1b2d1e8d181888677e00542bddbe4b85b68351093b503b32dd6ac22fddc78fe9
hovercard-subject-tag	repository:232123837
github-keyboard-shortcuts	repository,source-code,file-tree,copilot
google-site-verification	Apib7-x98H0j5cPqHWwSMm6dNU4GmODRoqxLiDzdx9I
octolytics-url	https://collector.github.com/github/collect
analytics-location	//
fb:app_id	1401488693436528
apple-itunes-app	app-id=1477376905, app-argument=https://github.com/sysdba/30DaysOfJavaScript/tree/master
twitter:image	https://opengraph.githubassets.com/886dabfed2473456babc84964e461705e2a059349b12e81fec2b5022bfca126f/sysdba/30DaysOfJavaScript
twitter:card	summary_large_image
og:image	https://opengraph.githubassets.com/886dabfed2473456babc84964e461705e2a059349b12e81fec2b5022bfca126f/sysdba/30DaysOfJavaScript
og:image:alt	A 30 days of JavaScript programming challenge. Contribute to sysdba/30DaysOfJavaScript development by creating an account on GitHub.
og:image:width	1200
og:image:height	600
og:site_name	GitHub
og:type	object
hostname	github.com
expected-hostname	github.com
None	b9a586c06a05a7a86fc7e3f4dbd03e42f6869085879aa184aa6369456dbd50fb
turbo-cache-control	no-cache
go-import	github.com/sysdba/30DaysOfJavaScript git https://github.com/sysdba/30DaysOfJavaScript.git
octolytics-dimension-user_id	5053740
octolytics-dimension-user_login	sysdba
octolytics-dimension-repository_id	232123837
octolytics-dimension-repository_nwo	sysdba/30DaysOfJavaScript
octolytics-dimension-repository_public	true
octolytics-dimension-repository_is_fork	true
octolytics-dimension-repository_parent_id	229764465
octolytics-dimension-repository_parent_nwo	Asabeneh/30-Days-Of-JavaScript
octolytics-dimension-repository_network_root_id	229764465
octolytics-dimension-repository_network_root_nwo	Asabeneh/30-Days-Of-JavaScript
turbo-body-classes	logged-out env-production page-responsive
disable-turbo	false
browser-stats-url	https://api.github.com/_private/browser/stats
browser-errors-url	https://api.github.com/_private/browser/errors
release	07a982c1d40157c619b364352b704c3ce66bb332
ui-target	full
theme-color	#1e2327
color-scheme	light dark

Links:

Skip to content	https://github.com/sysdba/30DaysOfJavaScript/tree/master#start-of-content
	https://github.com/
Sign in	https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fsysdba%2F30DaysOfJavaScript%2Ftree%2Fmaster
GitHub CopilotWrite better code with AI	https://github.com/features/copilot
GitHub Copilot appDirect agents from issue to merge	https://github.com/features/ai/github-app
MCP RegistryNewIntegrate external tools	https://github.com/mcp
ActionsAutomate any workflow	https://github.com/features/actions
CodespacesInstant dev environments	https://github.com/features/codespaces
IssuesPlan and track work	https://github.com/features/issues
Code ReviewManage code changes	https://github.com/features/code-review
GitHub Advanced SecurityFind and fix vulnerabilities	https://github.com/security/advanced-security
Code securitySecure your code as you build	https://github.com/security/advanced-security/code-security
Secret protectionStop leaks before they start	https://github.com/security/advanced-security/secret-protection
Why GitHub	https://github.com/why-github
Documentation	https://docs.github.com
Blog	https://github.blog
Changelog	https://github.blog/changelog
Marketplace	https://github.com/marketplace
View all features	https://github.com/features
Enterprises	https://github.com/enterprise
Small and medium teams	https://github.com/team
Startups	https://github.com/enterprise/startups
Nonprofits	https://github.com/solutions/industry/nonprofits
App Modernization	https://github.com/solutions/use-case/app-modernization
DevSecOps	https://github.com/solutions/use-case/devsecops
DevOps	https://github.com/solutions/use-case/devops
CI/CD	https://github.com/solutions/use-case/ci-cd
View all use cases	https://github.com/solutions/use-case
Healthcare	https://github.com/solutions/industry/healthcare
Financial services	https://github.com/solutions/industry/financial-services
Manufacturing	https://github.com/solutions/industry/manufacturing
Government	https://github.com/solutions/industry/government
View all industries	https://github.com/solutions/industry
View all solutions	https://github.com/solutions
AI	https://github.com/resources/articles?topic=ai
Software Development	https://github.com/resources/articles?topic=software-development
DevOps	https://github.com/resources/articles?topic=devops
Security	https://github.com/resources/articles?topic=security
View all topics	https://github.com/resources/articles
Customer stories	https://github.com/customer-stories
Events & webinars	https://github.com/resources/events
Ebooks & reports	https://github.com/resources/whitepapers
Business insights	https://github.com/solutions/executive-insights
GitHub Skills	https://skills.github.com
Documentation	https://docs.github.com
Customer support	https://support.github.com
Community forum	https://github.com/orgs/community/discussions
Trust center	https://github.com/trust-center
Partners	https://github.com/partners
View all resources	https://github.com/resources
GitHub SponsorsFund open source developers	https://github.com/open-source/sponsors
Security Lab	https://securitylab.github.com
Maintainer Community	https://maintainers.github.com
Accelerator	https://github.com/open-source/accelerator
GitHub Stars	https://stars.github.com
Archive Program	https://archiveprogram.github.com
Topics	https://github.com/topics
Trending	https://github.com/trending
Collections	https://github.com/collections
Enterprise platformAI-powered developer platform	https://github.com/enterprise
GitHub Advanced SecurityEnterprise-grade security features	https://github.com/security/advanced-security
Copilot for BusinessEnterprise-grade AI features	https://github.com/features/copilot/copilot-business
Premium SupportEnterprise-grade 24/7 support	https://github.com/enterprise/premium-support
Pricing	https://github.com/pricing
Search syntax tips	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
documentation	https://docs.github.com/search-github/github-code-search/understanding-github-code-search-syntax
Sign in	https://github.com/login?return_to=https%3A%2F%2Fgithub.com%2Fsysdba%2F30DaysOfJavaScript%2Ftree%2Fmaster
Sign up	https://github.com/signup?ref_cta=Sign+up&ref_loc=header+logged+out&ref_page=%2F%3Cuser-name%3E%2F%3Crepo-name%3E&source=header-repo&source_repo=sysdba%2F30DaysOfJavaScript
Reload	https://github.com/sysdba/30DaysOfJavaScript/tree/master
Reload	https://github.com/sysdba/30DaysOfJavaScript/tree/master
Reload	https://github.com/sysdba/30DaysOfJavaScript/tree/master
sysdba	https://github.com/sysdba
30DaysOfJavaScript	https://github.com/sysdba/30DaysOfJavaScript
Asabeneh/30-Days-Of-JavaScript	https://github.com/Asabeneh/30-Days-Of-JavaScript
Notifications	https://github.com/login?return_to=%2Fsysdba%2F30DaysOfJavaScript
Fork 0	https://github.com/login?return_to=%2Fsysdba%2F30DaysOfJavaScript
Star 0	https://github.com/login?return_to=%2Fsysdba%2F30DaysOfJavaScript
Code	https://github.com/sysdba/30DaysOfJavaScript
Pull requests 0	https://github.com/sysdba/30DaysOfJavaScript/pulls
Actions	https://github.com/sysdba/30DaysOfJavaScript/actions
Projects	https://github.com/sysdba/30DaysOfJavaScript/projects
Security and quality 0	https://github.com/sysdba/30DaysOfJavaScript/security
Insights	https://github.com/sysdba/30DaysOfJavaScript/pulse
Code	https://github.com/sysdba/30DaysOfJavaScript
Pull requests	https://github.com/sysdba/30DaysOfJavaScript/pulls
Actions	https://github.com/sysdba/30DaysOfJavaScript/actions
Projects	https://github.com/sysdba/30DaysOfJavaScript/projects
Security and quality	https://github.com/sysdba/30DaysOfJavaScript/security
Insights	https://github.com/sysdba/30DaysOfJavaScript/pulse
	https://github.com/sysdba/30DaysOfJavaScript
Branches	https://github.com/sysdba/30DaysOfJavaScript/branches
Tags	https://github.com/sysdba/30DaysOfJavaScript/tags
	https://github.com/sysdba/30DaysOfJavaScript/branches
	https://github.com/sysdba/30DaysOfJavaScript/tags
102 Commits	https://github.com/sysdba/30DaysOfJavaScript/commits/master/
	https://github.com/sysdba/30DaysOfJavaScript/commits/master/
01_Day	https://github.com/sysdba/30DaysOfJavaScript/tree/master/01_Day
01_Day	https://github.com/sysdba/30DaysOfJavaScript/tree/master/01_Day
02_Day	https://github.com/sysdba/30DaysOfJavaScript/tree/master/02_Day
02_Day	https://github.com/sysdba/30DaysOfJavaScript/tree/master/02_Day
03_Day	https://github.com/sysdba/30DaysOfJavaScript/tree/master/03_Day
03_Day	https://github.com/sysdba/30DaysOfJavaScript/tree/master/03_Day
04_Day	https://github.com/sysdba/30DaysOfJavaScript/tree/master/04_Day
04_Day	https://github.com/sysdba/30DaysOfJavaScript/tree/master/04_Day
05_Day	https://github.com/sysdba/30DaysOfJavaScript/tree/master/05_Day
05_Day	https://github.com/sysdba/30DaysOfJavaScript/tree/master/05_Day
data	https://github.com/sysdba/30DaysOfJavaScript/tree/master/data
data	https://github.com/sysdba/30DaysOfJavaScript/tree/master/data
images	https://github.com/sysdba/30DaysOfJavaScript/tree/master/images
images	https://github.com/sysdba/30DaysOfJavaScript/tree/master/images
.gitignore	https://github.com/sysdba/30DaysOfJavaScript/blob/master/.gitignore
.gitignore	https://github.com/sysdba/30DaysOfJavaScript/blob/master/.gitignore
readMe.md	https://github.com/sysdba/30DaysOfJavaScript/blob/master/readMe.md
readMe.md	https://github.com/sysdba/30DaysOfJavaScript/blob/master/readMe.md
README	https://github.com/sysdba/30DaysOfJavaScript/tree/master
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#table-of-contents
Day 2 >>	https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/02_Day/02_day_data_types.md
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#day-2-
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/day_1_1.png
📔Day 1	https://github.com/sysdba/30DaysOfJavaScript/tree/master#%f0%9f%93%94day-1
Introduction	https://github.com/sysdba/30DaysOfJavaScript/tree/master#introduction
Requirements	https://github.com/sysdba/30DaysOfJavaScript/tree/master#requirements
Setup	https://github.com/sysdba/30DaysOfJavaScript/tree/master#setup
Install Node.js	https://github.com/sysdba/30DaysOfJavaScript/tree/master#install-nodejs
Browser	https://github.com/sysdba/30DaysOfJavaScript/tree/master#browser
Installing Google Chrome	https://github.com/sysdba/30DaysOfJavaScript/tree/master#installing-google-chrome
Opening Google Chrome Console	https://github.com/sysdba/30DaysOfJavaScript/tree/master#opening-google-chrome-console
Writing Code on browser Console	https://github.com/sysdba/30DaysOfJavaScript/tree/master#writing-code-on-browser-console
Console.log	https://github.com/sysdba/30DaysOfJavaScript/tree/master#consolelog
Console.log with multiple arguments	https://github.com/sysdba/30DaysOfJavaScript/tree/master#consolelog-with-multiple-arguments
Comment	https://github.com/sysdba/30DaysOfJavaScript/tree/master#comment
Syntax	https://github.com/sysdba/30DaysOfJavaScript/tree/master#syntax
Arithmetics	https://github.com/sysdba/30DaysOfJavaScript/tree/master#arithmetics
Code Editor	https://github.com/sysdba/30DaysOfJavaScript/tree/master#code-editor
Installing Visual Studio Code	https://github.com/sysdba/30DaysOfJavaScript/tree/master#installing-visual-studio-code
How to use visual studio code	https://github.com/sysdba/30DaysOfJavaScript/tree/master#how-to-use-visual-studio-code
Adding JavaScript to a web page	https://github.com/sysdba/30DaysOfJavaScript/tree/master#adding-javascript-to-a-web-page
Inline Script	https://github.com/sysdba/30DaysOfJavaScript/tree/master#inline-script
Internal script	https://github.com/sysdba/30DaysOfJavaScript/tree/master#internal-script
External script	https://github.com/sysdba/30DaysOfJavaScript/tree/master#external-script
Multiple External scripts	https://github.com/sysdba/30DaysOfJavaScript/tree/master#multiple-external-scripts
Introduction to Data types	https://github.com/sysdba/30DaysOfJavaScript/tree/master#introduction-to-data-types
Number	https://github.com/sysdba/30DaysOfJavaScript/tree/master#number
String	https://github.com/sysdba/30DaysOfJavaScript/tree/master#string
Booleans	https://github.com/sysdba/30DaysOfJavaScript/tree/master#booleans
Undefined	https://github.com/sysdba/30DaysOfJavaScript/tree/master#undefined
Null	https://github.com/sysdba/30DaysOfJavaScript/tree/master#null
Checking Data types	https://github.com/sysdba/30DaysOfJavaScript/tree/master#checking-data-types
Comments	https://github.com/sysdba/30DaysOfJavaScript/tree/master#comments
Variables	https://github.com/sysdba/30DaysOfJavaScript/tree/master#variables
💻 Day 1: Exercises	https://github.com/sysdba/30DaysOfJavaScript/tree/master#%f0%9f%92%bb-day-1-exercises
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#day-1
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#introduction
telegram group	https://t.me/ThirtyDaysOfJavaScript
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#requirements
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#setup
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#install-nodejs
node.js	https://nodejs.org/en/
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/download_node.png
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/install_node.png
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#browser
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#installing-google-chrome
google chrome	https://www.google.com/chrome/
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/google_chrome.png
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#opening-google-chrome-console
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/opening_developer_tool.png
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/opening_chrome_console_shortcut.png
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/js_code_on_chrome_console.png
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#writing-code-on-browser-console
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#consolelog
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#consolelog-with-multiple-arguments
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/console_log_multipl_arguments.png
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#comment
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#syntax
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/raising_syntax_error.png
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#arithmetics
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/arithmetic.png
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#code-editor
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#installing-visual-studio-code
download	https://code.visualstudio.com/
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/vscode.png
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#how-to-use-visual-studio-code
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/vscode_ui.png
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/adding_project_to_vscode.png
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/opening_project_on_vscode.png
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/scripts_on_vscode.png
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/running_script.png
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/launched_on_new_tab.png
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#adding-javascript-to-a-web-page
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#inline-script
Chrome	https://www.google.com/chrome/
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#internal-script
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/js_code_vscode.png
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#external-script
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#multiple-external-scripts
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/multiple_script.png
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#introduction-to-data-types
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#number
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#string
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#booleans
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#undefined
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#null
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#checking-data-types
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#comments
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#variables
	https://github.com/sysdba/30DaysOfJavaScript/blob/master/images/day_1.png
	https://github.com/sysdba/30DaysOfJavaScript/tree/master#-day-1-exercises
Day 2 >>	https://github.com/Asabeneh/30DaysOfJavaScript/blob/master/02_Day/02_day_data_types.md
Readme	https://github.com/sysdba/30DaysOfJavaScript/tree/master#readme-ov-file
Please reload this page	https://github.com/sysdba/30DaysOfJavaScript/tree/master
Activity	https://github.com/sysdba/30DaysOfJavaScript/activity
0 forks	https://github.com/sysdba/30DaysOfJavaScript/forks
Report repository	https://github.com/contact/report-content?content_url=https%3A%2F%2Fgithub.com%2Fsysdba%2F30DaysOfJavaScript&report=sysdba+%28user%29
Releases	https://github.com/sysdba/30DaysOfJavaScript/releases
Packages 0	https://github.com/users/sysdba/packages?repo_name=30DaysOfJavaScript
Please reload this page	https://github.com/sysdba/30DaysOfJavaScript/tree/master
Contributors	https://github.com/sysdba/30DaysOfJavaScript/graphs/contributors
Please reload this page	https://github.com/sysdba/30DaysOfJavaScript/tree/master
	https://github.com
Terms	https://docs.github.com/site-policy/github-terms/github-terms-of-service
Privacy	https://docs.github.com/site-policy/privacy-policies/github-privacy-statement
Security	https://github.com/security
Status	https://www.githubstatus.com/
Community	https://github.community/
Docs	https://docs.github.com/
Contact	https://support.github.com?tags=dotcom-footer

Viewport: width=device-width

URLs of crawlers that visited me.