When comparing Crockford on JavaScript vs Speaking JavaScript, the Slant community recommends Crockford on JavaScript for most people. In the question“What are the best resources to learn JavaScript?” Crockford on JavaScript is ranked 16th while Speaking JavaScript is ranked 21st. The most important reason people chose Crockford on JavaScript is:
These lectures start at the very beginning with a recap of computer history and evolution of programming in order to give context to everything that's being taught later and to make sure no topic skipped.
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Pros
Pro Beginner focused
These lectures start at the very beginning with a recap of computer history and evolution of programming in order to give context to everything that's being taught later and to make sure no topic skipped.
Pro Well written and very thorough
A mostly complete reference to the language, its history, its powers and its weaknesses.
Cons
Con Somewhat outdated
These videos are from 2011 and cover topics such as introducing ECMAScript5.
Con Assumes some programming knowledge
This book is not for beginners. It's targeted towards people who already have programming experience, though not necessarily in JavaScript.