You Don%27t Know Js Pdf Download

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  • You Don't Know Js: Types & Grammar
  • Kyle Simpson
  • 1 edition
  • JavaScript Programming / Software Development / Computer Programming Languages
  • February 17, 2015
  • 1491904194
  • 9781491904190
  • English
  • 198 pages
  • PDF, ePUB
  1. As part of the “You Don’t Know JS” series, this concise yet in-depth guide focuses on new asynchronous features and performance techniques—including Promises, generators, and Web Workers—that let you create sophisticated single-page web applications and escape callback hell in the process.
  2. I teach all my workshops exclusively through Frontend Masters. If you like this book content, please check out my video training courses. I want to extend a warm and deep thanks to Marc Grabanski and the entire Frontend Masters team, not only for their excellent work with the video training platform, but for their unwavering support of me and of the 'You Don't Know JS' books!
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Book Description
No matter how much experience you have with jаvascript, odds are you don’t fully understand the language. As part of the 'You Don’t Know JS' series, this compact guide explores jаvascript types in greater depth than previous treatments by looking at type coercion problems, demonstrating why types work, and showing you how to take advantage of these features.
Like other books in this series, You Don’t Know JS: Types & Grammar dives into trickier parts of the language that many jаvascript programmers simply avoid or assume don’t exist (like types). Armed with this knowledge, you can achieve true jаvascript mastery.

You Don't Know Js Pdf


With this book you will:
  • Get acquainted with jаvascript’s seven types: null, undefined, boolean, number, string, object, and symbol
  • Understand why JavaSript’s unique array, string, and number characteristics may delight or confound you
  • Learn how natives provide object wrappers around primitive values
  • Dive into the coercion controversy—and learn why this feature is useful in many cases
  • Explore various nuances in jаvascript syntax, involving statements, expressions, and other features

Content

1. Types
2. Values
3. Natives
4. Coercion
5. Grammar

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Book Description

I'm sure you noticed, but 'JS' in the book series title is not an abbreviation for words used to curse about JavaScript, though cursing at the language's quirks is something we can probably all identify with! From the earliest days of the web, JavaScript has been a foundational technology that drives interactive experience around the content we consume. While flickering mouse trails and annoying pop-up prompts may be where JavaScript started, nearly 2 decades later, the technology and capability of JavaScript has grown many orders of magnitude, and few doubt its importance at the heart of the world's most widely available software platform: the web. But as a language, it has perpetually been a target for a great deal of criticism, owing partly to its heritage but even more to its design philosophy. Even the name evokes, as Brendan Eich once put it, 'dumb kid brother' status next to its more mature older brother 'Java'. But the name is merely an accident of politics and marketing. The two languages are vastly different in many important ways. 'JavaScript' is as related to 'Java' as 'Carnival' is to 'Car'. Because JavaScript borrows concepts and syntax idioms from several languages, including proud C-style procedural roots as well as subtle, less obvious Scheme/Lisp-style functional roots, it is exceedingly approachable to a broad audience of developers, even those with just little to no programming experience. The 'Hello World' of JavaScript is so simple that the language is inviting and easy to get comfortable with in early exposure. While JavaScript is perhaps one of the easiest languages to get up and running with, its eccentricities make solid mastery of the language a vastly less common occurrence than in many other languages. Where it takes a pretty in-depth knowledge of a language like C or C++ to write a full-scale program, full-scale production JavaScript can, and often does, barely scratch the surface of what the language can do. Sophisticated concepts which are deeply rooted into the language tend instead to surface themselves in seemingly simplistic ways, such as passing around functions as callbacks, which encourages the JavaScript developer to just use the language as-is and not worry too much about what's going on under the hood. It is simultaneously a simple, easy-to-use language that has broad appeal, and a complex and nuanced collection of language mechanics which without careful study will elude true understanding even for the most seasoned of JavaScript developers. Therein lies the paradox of JavaScript, the Achilles' Heel of the language, the challenge we are presently addressing. Because JavaScript can be used without understanding, the understanding of the language is often never attained.

Book Details

Publisher: O'Reilly
By: Jake Archibald
Language: English
File size: 1.46 MB
File format: PDF
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