Who Is This Book For?
This book is aimed at intermediate JavaScripters. You should know how variables are scoped. Keywords like typeof, arguments, and this shouldn’t faze you. Perhaps most importantly, you should understand that
| | func(function(arg) { return next(arg); }); |
is just a needlessly verbose way of writing
| | func(next); |
except in rare cases. (See Reg Braithwaite’s excellent article “Captain Obvious on JavaScript” for more examples of small but important functional idioms.)[5]
What you don’t need to know is how asynchronous events are scheduled in JavaScript. We’ll cover that in the next chapter.
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