While this subset has been famoulsy dubbed “The Good Parts,” I would implore you, dear reader, to instead consider it the “The Easy Parts,” “The Safe Parts,” or even “The Incomplete Parts.”
Here, we address head on the tendency of JS developers to learn “just enough” to get by, without ever forcing themselves to learn exactly how and why the language behaves the way it does. Furthermore, we eschew the common advice to retreat when the road gets rough.
These books each take on specific core parts of the language that are most commonly misunderstood or under-understood, and dive very deep and exhaustively into them. You should come away from reading with a firm confidence in your understanding, not just of the theoretical, but the practical “what you need to know” bits.
The following typographical conventions are used in this book:
Constant width bold
Constant width italic
This element signifies a tip or suggestion.
This element signifies a general note.
This element indicates a warning or caution.
Supplemental material (code examples, exercises, etc.) is available for download at http://bit.ly/1c8HEWF.
This book is here to help you get your job done. In general, if example code is offered with this book, you may use it in your programs and documentation. You do not need to contact us for permission unless you’re reproducing a significant portion of the code. For example, writing a program that uses several chunks of code from this book does not require permission. Selling or distributing a CD-ROM of examples from O’Reilly books does require permission. Answering a question by citing this book and quoting example code does not require permission. Incorporating a significant amount of example code from this book into your product’s documentation does require permission.
We appreciate, but do not require, attribution. An attribution usually includes the title, author, publisher, and ISBN. For example: “Scope and Closures by Kyle Simpson (O’Reilly). Copyright 2014 Kyle Simpson, 978-1-449-33558-8.”
If you feel your use of code examples falls outside fair use or the permission given above, feel free to contact us at firstname.lastname@example.org.
Technology professionals, software developers, web designers, and business and creative professionals use Safari Books Online as their primary resource for research, problem solving, learning, and certification training.
Safari Books Online offers a range of product mixes and pricing programs for organizations, government agencies, and individuals. Subscribers have access to thousands of books, training videos, and prepublication manuscripts in one fully searchable database from publishers like O’Reilly Media, Prentice Hall Professional, Addison-Wesley Professional, Microsoft Press, Sams, Que, Peachpit Press, Focal Press, Cisco Press, John Wiley & Sons, Syngress, Morgan Kaufmann, IBM Redbooks, Packt, Adobe Press, FT Press, Apress, Manning, New Riders, McGraw-Hill, Jones & Bartlett, Course Technology, and dozens more. For more information about Safari Books Online, please visit us online.
Please address comments and questions concerning this book to the publisher:
|O’Reilly Media, Inc.|
|1005 Gravenstein Highway North|
|Sebastopol, CA 95472|
|800-998-9938 (in the United States or Canada)|
|707-829-0515 (international or local)|
We have a web page for this book, where we list errata, examples, and any additional information. You can access this page at http://oreil.ly/JS_scope_and_closures.
To comment or ask technical questions about this book, send email to email@example.com.
For more information about our books, courses, conferences, and news, see our website at http://www.oreilly.com.
Find us on Facebook: http://facebook.com/oreilly
Follow us on Twitter: http://twitter.com/oreillymedia
Watch us on YouTube: http://www.youtube.com/oreillymedia
Check out the full You Don’t Know JS series: http://YouDontKnowJS.com