When comparing D3.js in Action vs Hackr.io, the Slant community recommends Hackr.io for most people. In the question“What are the best resources to learn D3.js?” Hackr.io is ranked 4th while D3.js in Action is ranked 6th. The most important reason people chose Hackr.io is:
Instead of getting a recommendation from a single dev, you get recommendation from the entire programming community.
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Pros
Pro Some material available for free
Three chapters of the book are available as a free download.
Pro Comprehensive resource
D3.js in Action is 352 pages long and provides a strong foundation in D3.js before providing you with a comprehensive list of ways it can be used.
Pro Community trust
Instead of getting a recommendation from a single dev, you get recommendation from the entire programming community.
Pro Recommendation for every programming language/framework/library
You can find Python as well as Jenkins.
Pro Nice filters
Free, Video, Book, Beginner, Advanced, etc.
Cons
Con Intimidating for beginners
Due to the heavy volume of information packed into the book, it can be a discouraging place to start for someone new to D3.js.