
Days Calculator
clocks.life
Date Calculator Pro
Day-Number
Working Days Calc
DateCalc.xyz
28 Days from Today
Free tools to calculate business or calendar days between dates, add/subtract days, invoice age & due dates, fiscal year remaining days, cascading deadlines, ISO week numbers, and more.
VS Code
CodePen
GitHub
Node.js
RegExr
JSFiddle
CodeSandbox
Free ebook for the JS Beginners

Which is more popular?
Based on our record, Eloquent JavaScript seems to be more popular. It has been mentioned 218 times since March 2021.
Website, pricing, platforms and company facts side by side.
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Eloquent JavaScript
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| Website | countbusinessdays.com | eloquentjavascript.net |
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Eloquent JavaScript A Modern Introduction to Programming 3rd Edition by Marijn Haverbeke review
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Recommendations tracked on public social media and blogs since March 2021.

Tracking CountBusinessDays since Aug 2026.
If you haven’t read Eloquent JavaScript , go check it out. It’s one of my all-time favourite programming books — hands down. - Source: dev.to / about 1 year ago
Videos, blogs, text-based teachings, YouTube project-based learning, books, and the like are all examples of various methods and mediums of acquiring skills, especially in the software engineering industry. As I continue to navigate... - Source: dev.to / almost 2 years ago
Seconded. I won't recommend it and no one I know has recommended it for a decade. It's hard for someone who doesn't know JS to know which parts has changed and is no longer the way to do things. https://github.com/getify/You-Dont-Know-JS... - Source: Hacker News / about 2 years ago
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