When comparing Official Angular documentation vs AngularJS by Example, the Slant community recommends AngularJS by Example for most people. In the question“What are the best resources to learn AngularJS?” AngularJS by Example is ranked 11th while Official Angular documentation is ranked 19th. The most important reason people chose AngularJS by Example is:
The author anticipates many of the common errors you may encounter while working through the practice examples. He explains why they happen, and how to prevent them.
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Pros
Pro Pace set by a learner
There is no video and other disturbances, you just go through the official documentation.
Pro Anticipates and explains errors
The author anticipates many of the common errors you may encounter while working through the practice examples. He explains why they happen, and how to prevent them.
Pro Real world projects
The book incrementally develops more than one real world angular apps with detailed explanation of Angularjs concepts. Companion source code also works just fine with angular v 1.3
Cons
Con Not for lazy learners
You have to read a lot of text (or install some text to speech accessibility.
Con "Handling Common Scenarios" chapter could be more in-depth
The chapter explains a few common scenarios and how to deal with them using best practices.
However it's a bit light for a fairly important chapter and only touches on things like authentication and authorization.