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Taxid.dev VS Eloquent JavaScript

Compare Taxid.dev VS Eloquent JavaScript and see what are their differences

Taxid.dev

TaxID is a developer-first API to validate VAT and tax IDs across 31 countries — 27 EU member states via VIES, plus UK, Switzerland, Norway, and Australia. Stripe-style errors, JSON responses, 100 free validations/month.

Rating
0 reviews
Alternatives Is it good?
EJS
Eloquent JavaScript

Free ebook for the JS Beginners

Rating
0 reviews
Pricing
Open source
Alternatives Is it good?
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Which is more popular?

Based on our record, Eloquent JavaScript seems to be more popular. It has been mentioned 218 times since March 2021.

social mentions
0 vs 218
Tax Compliance popularity
100% vs 0%
alternatives listed
11 vs 124

Base details

Website, pricing, platforms and company facts side by side.

Taxid.dev
EJS
Eloquent JavaScript
Website taxid.dev eloquentjavascript.net
Pricing
Official pricing
Open source
Listed in
APIs Developer Tools SaaS Tax Compliance Billing & Invoicing B2B EU VAT +4
Software Development Text Editors Programming Tools Developer Tools +1

Features and specs

What each product offers, as listed by its team.

Taxid.dev 5 features
EJS
Eloquent JavaScript 5 features
  • Simple API for tax ID validation
    Taxid.dev provides a straightforward API and library for validating and formatting tax identification numbers (like VAT, EIN, etc.) across multiple countries, making it easy for developers to integrate into their applications.
  • Multi-country support
    The tool supports tax ID formats from a wide variety of countries, which is useful for businesses operating internationally and needing to validate different tax ID structures.
  • Open-source availability
    Being open-source (or offering open-source components), it allows developers to inspect the code, contribute improvements, and self-host if needed, increasing trust and flexibility.
  • Free to use
    Taxid.dev offers its core functionality for free, making it accessible for small businesses, startups, and individual developers who need tax ID validation without incurring additional costs.
  • Developer-friendly documentation
    The service typically provides clear documentation and examples, helping developers quickly understand how to implement tax ID validation in their projects.
  • Comprehensive Learning Resource
    Eloquent JavaScript covers a wide range of topics, from basic syntax to advanced concepts like asynchronous programming and web development. This depth makes it a valuable resource for both beginners and advanced programmers.
  • Interactive Code Examples
    The book contains numerous interactive code examples that allow readers to see the effects of their code in real-time. This hands-on approach reinforces learning and helps solidify concepts.
  • Free Online Access
    Eloquent JavaScript is available for free online, making it accessible to anyone with an internet connection. This allows learners from around the world to benefit from its content without financial barriers.
  • Engaging Writing Style
    The author, Marijn Haverbeke, writes in an engaging and clear style, making complex topics more understandable and keeping readers interested.
  • Good Balance of Theory and Practice
    The book strikes a good balance between theoretical explanations and practical exercises, allowing readers to apply what they have learned immediately.

Possible disadvantages

  • Steep Learning Curve
    Some readers may find the book's progression to be rapid, especially if they are complete beginners. The book quickly moves from basic to more complex topics, which can be overwhelming.
  • Lacks Visual Aids
    While the text is clear and the code examples are helpful, the book could benefit from more visual aids like diagrams and illustrations to explain complex concepts.
  • Assumes Some Prior Knowledge
    Although it's aimed at beginners, the book sometimes assumes that readers have some prior programming experience, which can make it less accessible to absolute novices.
  • Limited Coverage of Latest ES Features
    The book may not cover some of the latest features and best practices introduced in newer versions of JavaScript (e.g., ES2019 and beyond), meaning readers might need to supplement their learning with additional resources.
  • Web Development Sections Could Be More Detailed
    While the book does touch on web development, the sections on this topic are not as in-depth as some readers might hope. Those looking to get a more thorough grounding in web development may need to consult other sources.

Analysis

An editorial look at what each product does well and who it suits.

Taxid.dev
EJS
Eloquent JavaScript

Overall verdict

  • Taxid.dev appears to be a useful developer-focused tool/API service for validating and processing tax identification numbers across different countries, offering solid value for businesses that need automated tax ID verification.

Why this product is good

  • Provides programmatic validation of tax IDs across multiple countries and formats
  • Likely offers a developer-friendly API for easy integration into existing systems
  • Can help reduce manual errors in tax ID collection and verification processes
  • May support compliance needs for businesses operating internationally

Recommended for

  • Developers building fintech, e-commerce, or invoicing platforms
  • Businesses needing automated tax ID validation during customer onboarding
  • SaaS companies handling international clients with VAT/tax ID requirements
  • Teams looking to reduce manual compliance checks through API automation

Overall verdict

  • Yes, Eloquent JavaScript is considered a good and valuable resource for learning JavaScript. It effectively balances theory with practical application, making it a popular choice among students and developers wishing to deepen their understanding of the language.

Why this product is good

  • Eloquent JavaScript is widely regarded as a strong resource for learning JavaScript due to its comprehensive coverage of both fundamental and advanced concepts. It is praised for its clear explanations, practical examples, and engaging writing style, which help readers understand complex topics. Its focus on best practices and problem-solving skills makes it a valuable reference for both beginners and experienced developers.

Recommended for

  • Beginners looking for a solid introduction to JavaScript
  • Intermediate developers seeking to reinforce their knowledge
  • Experienced programmers wanting to explore more advanced JavaScript topics
  • Anyone interested in functional programming concepts
  • Developers aiming to improve their problem-solving skills in JavaScript

Videos

Walkthroughs and reviews on video.

Taxid.dev 0 videos + Add
EJS
Eloquent JavaScript 3 videos + Add

No Taxid.dev videos yet. You could help us improve this page by suggesting one.

Eloquent JavaScript A Modern Introduction to Programming 3rd Edition by Marijn Haverbeke review

More videos

  • - Eloquent JavaScript review
  • - Book Review: Eloquent Javascript by Marijn Haverbeke

Category popularity

How often each product is chosen within a category, 0–100% relative to the other.

Score bands 0–20 21–40 41–50 51–60 61–100
Taxid.dev
EJS
Eloquent JavaScript
100% 100%
Tax Compliance
0% 0%
0% 0%
Text Editors
100% 100%
5% 5%
Developer Tools
95% 95%
100% 100%
Billing & Invoicing
0% 0%

Questions & Answers

As answered by people managing Taxid.dev and Eloquent JavaScript.

What's the story behind your product?

Taxid.dev's answer

TaxID was built after running into the same problem on three consecutive client projects: validating EU VAT numbers reliably.

The official EU source — VIES — is SOAP-based, frequently goes down without warning, has no caching layer, and returns errors like "MS_UNAVAILABLE" with no context. Every time, the workaround was the same: write a thin wrapper, add Redis cache, handle the downtime, parse the SOAP response into something usable.

Instead of writing it a fourth time, I built TaxID as a public API. The free tier exists because that's what I would have wanted on those projects — a way to evaluate the product without a sales cycle.

The product is intentionally small: one well-built endpoint, structured errors, fast cached responses. No tax calculation, no nexus tracking, no enterprise dashboard. Just the VIES wrapper VIES should have been.

What makes your product unique?

Taxid.dev's answer

TaxID is the only VAT validation API that combines four things at once:

  • A truly free forever plan (100 validations/month, no credit card)
  • Sub-10ms cached responses via Redis (24h cache on valid lookups)
  • Coverage across 31 countries from a single endpoint — 27 EU member states via VIES, plus UK (HMRC), Switzerland, Norway and Australia (ABR)
  • Stripe-style structured error codes you can branch logic on (vatinvalid, serviceunavailable, countrynotsupported)

Other providers either charge from the first call, only cover EU VIES, or return SOAP/XML you need to parse. TaxID is the thin REST wrapper that just works.

Why should a person choose your product over its competitors?

Taxid.dev's answer

Three reasons:

  1. Developer-first DX. REST, JSON, OpenAPI spec, Stripe-style error codes, country-specific format validation before hitting VIES (so malformed numbers fail instantly without consuming quota). Most competitors are SOAP wrappers with cryptic errors.

  2. Real free tier. 100 validations per month, no credit card. Vatstack, Vatlayer and Avalara either require a card upfront or have hard limits that block real evaluation. With TaxID you can ship a side project to production on the free plan.

  3. Extended coverage. Most VAT APIs stop at the EU. TaxID adds the UK (HMRC), Switzerland, Norway and Australia (ABR) — useful for any SaaS with global B2B customers.

Honest about limits: TaxID is not an enterprise compliance suite. If you need US sales tax nexus, full ERP integration or KYB beyond VAT, look at Avalara or Sovos. TaxID is for developers who need to validate a VAT number reliably inside a checkout or invoice flow.

How would you describe the primary audience of your product?

Taxid.dev's answer

Developers building B2B SaaS or eCommerce products that need to validate company tax IDs as part of their billing flow.

Typical users: - SaaS founders integrating Stripe with EU VAT compliance (reverse charge mechanism) - Backend developers working on B2B checkouts in Node.js, Python, PHP or Go - Indie hackers shipping products to European customers who can't afford enterprise tax compliance tools - Accounting and ERP integration developers - Compliance and KYB workflow builders

The shared trait: they want a clean REST API with a free tier, not an enterprise sales call.

Which are the primary technologies used for building your product?

Taxid.dev's answer

  • Hono on Cloudflare Workers (edge runtime, low cold start)
  • Redis for 24h cache on valid VAT lookups
  • VIES SOAP service (EU Commission) as upstream for all 27 EU member states
  • HMRC API for UK VAT validation
  • Australian Business Register (ABR) for Australian ABN validation
  • TypeScript end to end, with zod for runtime schema validation
  • OpenAPI 3.1 spec auto-generated from route handlers

User comments

Share your experience with using Taxid.dev and Eloquent JavaScript. For example, how are they different and which one is better?

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Social recommendations and mentions

Recommendations tracked on public social media and blogs since March 2021.

Taxid.dev 0 mentions
EJS
Eloquent JavaScript 218 mentions

Tracking Taxid.dev since May 2026.

  • My Azure Cloud Resume Challenge Journey
    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
  • How do we learn to get good at programming
    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
  • Ask HN: Changing my mind about JavaScript
    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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