by John H. Keyes
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by Neil Smyth - Techotopia
by Reginald Braithwaite - Leanpub
by Kyle Simpson - O'Reilly
This guide takes you inside scope and closures, two core concepts you need to know to become a more efficient JS programmer. You'll learn how and why they work, and how an understanding of closures can be a powerful part of your development skillset.