揭秘JavaScript大神视角：理论与实践的美丽探索

需积分: 9 79 浏览量更新于2024-07-21 2 收藏 2.77MB PDF 举报

"《Beautiful JavaScript: 2015 年第 8 版》是一本深入探讨JavaScript编程语言的专业书籍，由业内领先的程序员分享他们对JavaScript的独特理解和实践经验。该书针对JavaScript在Web开发领域的广泛争议和误解提供了独特的视角，分析了这门语言为何能在众多尝试者失败后仍然保持生命力。书中汇集了多位领域专家如Jacob Thornton、Ariya Hidayat和Sara Chipps的章节，他们分享了自己钟爱的语言特性，展示了如何将看似棘手的功能转化为实用工具，以及如何利用JavaScript进行创新表达。作者Anton Kovalyov不仅是Medium的软件工程师，也是JSHint的创建者之一，同时也是《第三方JavaScript》（Manning）的合著者，因此本书的编辑背景深厚。参与本书的作者还包括 Jonathan Barronville、Angus Croll、Marijn Haverbeke、Daryl Koopersmith、Rebecca Murphey、Daniel Pupius和Graeme Roberts等，他们的专业知识和经验使得本书内容丰富且具有深度。这本书不仅适合想要深入了解JavaScript的开发者，也对那些希望通过实践和理论结合来提升JavaScript技能的程序员具有很高的参考价值。通过阅读这本书，读者不仅能掌握JavaScript的核心概念，还能了解到如何在实际项目中巧妙应用这些知识，从而提高代码质量和工作效率。对于JavaScript爱好者和从业者来说，《Beautiful JavaScript》是一本不可多得的宝典，有助于揭示JavaScript的魅力和无限可能。"

be inheritable to be visible—and with that simple observation, the entire justiﬁcation

for inheritance hierarchies collapses like a house of cards.

The most basic approach to function reuse is manual delegation—any public function

can be invoked directly via call or apply. It’s a powerful and easily overlooked feature.

However, aside from the verbosity of serial call or apply directives, such delegation is

so convenient that, paradoxically, it sometimes actually works against structural disci-

pline in your code—the invocation process is sufﬁciently ad hoc that in theory there is

no need for developers to organize their code at all.

Mixins are a good compromise: by encouraging the organization of functionality along

thematic lines they offer something of the descriptive prowess of the class hierarchy,

yet they are light and

ﬂexible enough to avoid the premature organization traps (and

head-spinning dizziness) associated with deeply chained, single-ancestry models. Bet-

ter still, mixins require minimal syntax and play very well with unchained JavaScript

prototypes.

The Basics

Traditionally, a mixin is a class that deﬁnes a set of functions that would otherwise be

deﬁned by a concrete entity (a person, a circle, an observer). However, mixin classes

are considered abstract in that they will not themselves be instantiated—instead, their

functions are copied (or borrowed) by concrete classes as a means of inheriting behav-

ior without entering into a formal relationship with the behavior provider.

Okay, but this is JavaScript, and we have no classes per se. This is actually a good thing

because it means we can use objects (instances) instead, which offer clarity and

ﬂexi-

bility: our mixin can be a regular object, a prototype, a function, whatever, and the

mixin process becomes transparent and obvious.

The Use Case

I’m going to discuss a number of mixin techniques, but all the coding examples are

directed toward one use case: creating circular, oval, or rectangular buttons (some-

thing that would not be readily possible using conventional classical inheritance tech-

niques). Here’s a schematic representation: square boxes represent mixin objects, and

rounded boxes represent the actual buttons.

CHAPTER ONE: BEAUTIFUL MIXINS

剩余166页未读，继续阅读

xinconan2

粉丝: 269
资源: 399

揭秘JavaScript大神视角：理论与实践的美丽探索

Beautiful JavaScript

JavaScript.pdf

活用JavaScript.pdf

The.Principles.of.Beautiful.Web.Design.2

The.Principles.of.Beautiful.Web.Design1

Beautiful Soup.pdf

Beautiful.zip

beautiful.br

[web开发CSS系列].The.Principles.of.Beautiful.Web.Design

nmap_beautiful.xsl

最新资源