Nicholas C. Zakas

If you've used a more traditional object-oriented language, such as C++ or Java, JavaScript probably doesn't seem object-oriented at all. It has no concept of classes, and you don't even need to define any objects in order to write code. But don't be fooled—JavaScript is an incredibly powerful and expressive object-oriented language that puts many design decisions right into your hands. In The Principles of Object-Oriented JavaScript, Nicholas C. Zakas thoroughly explores JavaScript's object-oriented nature, revealing the language's unique implementation of inheritance and other key characteristics. You'll learn: –The difference between primitive and reference values –What makes JavaScript functions so unique –The various ways to create objects –How to define your own constructors –How to work with and understand prototypes –Inheritance patterns for types and objects The Principles of Object-Oriented JavaScript will leave even experienced developers with a deeper understanding of JavaScript. Unlock the secrets behind how objects work in JavaScript so you can write clearer, more flexible, and more efficient code.

The Principles of Object-Oriented JavaScript

Dispels the myth that JavaScript is a "baby" language and demonstrates why it is the scripting language of choice used in the design of millions of Web pages and server–side applications Quickly covers JavaScript basics and then moves on to more advanced topics such as object–oriented programming, XML, Web services, and remote scripting Addresses the many issues that Web application developers face, including internationalization, security, privacy, optimization, intellectual property issues, and obfuscation Builds on the reader′s basic understanding of HTML, CSS, and the Web in general This book is also available as part of the 4–book JavaScript and Ajax Wrox Box (ISBN: 0470227818). This 4–book set includes: Professional JavaScript for Web Developers (ISBN: 0764579088) Professional Ajax 2nd edition (ISBN: 0470109491) Professional Web 2.0 Programming (ISBN: 0470087889) Professional Rich Internet Applications: Ajax and Beyond (ISBN: 0470082801)

Professional JavaScript for Web Developers

ECMAScript 6 represents the biggest update to the core of JavaScript in the history of the language. In Understanding ECMAScript 6, expert developer Nicholas C. Zakas provides a complete guide to the object types, syntax, and other exciting changes that ECMAScript 6 brings to JavaScript. Every chapter is packed with example code that works in any JavaScript environment so you’ll be able to see new features in action. You’ll learn: *How ECMAScript 6 class syntax relates to more familiar JavaScript concepts *What makes iterators and generators useful *How arrow functions differ from regular functions *Ways to store data with sets, maps, and more *The power of inheritance *How to improve asynchronous programming with promises *How modules change the way you organize code Whether you’re a web developer or a Node.js developer, you’ll find Understanding ECMAScript 6 indispensable on your journey from ECMAScript 5 to ECMAScript 6.

The Definitive Guide for JavaScript Developers

Understanding ECMAScript 6

Many features inspired by popular JavaScript libraries are now available as native JavaScript APIs in today’s powerful browsers. While that may seem convenient given all of the JavaScript you need to write, relying on these APIs will only make code maintenance more difficult in the long run. In this report, Nicholas Zakas—consultant and former front-end tech leader at Yahoo!—provides a case study to show how different browsers can develop native APIs for the same specification and still end up with different interpretations. You’ll discover how these APIs can tie your code to specific browsers, forcing you to upgrade application logic whenever new browsers and new browser versions are released.

The Problem with Native JavaScript APIs

Understanding ES6

Understanding JavaScript Promises - Community Edition

Joe Fawcett

Jeremy McPeak

Professional Ajax 2nd Edition provides a developer-level tutorial of Ajax techniques, patterns, and use cases. The book begins by exploring the roots of Ajax, covering how the evolution of the web and new technologies directly led to the development of Ajax techniques. A detailed discussion of how frames, JavaScript, cookies, XML, and XMLHttp requests (XHR) related to Ajax is included. After this introduction, the book moves on to cover the implementation of specific Ajax techniques. Request brokers such as hidden frames, dynamic iframes, and XHR are compared and contrasted, explaining when one method should be used over another. To make this discussion clearer, a brief overview of HTTP requests and responses is included. Once a basic understanding of the various request types is discussed, the book moves on to provide in-depth examples of how and when to use Ajax in a web site or web application. Different data transmission formats, including plain text, HTML, XML, and JSON are discussed for their advantages and disadvantages. Also included is a discussion on web services and how they may be used to perform Ajax techniques. Next, more complex topics are covered. A chapter introducing a request management framework explores how to manage all of the requests inside of an Ajax application. Ajax debugging techniques are also discussed. Professional Ajax 2nd edition is written for Web application developers looking to enhance the usability of their web sites and web applications and intermediate JavaScript developers looking to further understand the language. Readers should have familiarity with XML, XSLT, Web Services, PHP or C#, HTML, CSS. Professional Ajax 2nd edition adds nearly 200 pages of new and expanded coverage compared to the first edition.

Professional Ajax

You may have definite ideas about writing code when working alone, but team development requires that everyone use the same approach. With the JavaScript practices in this book—including code style, programming tips, and automation—you will learn how to write maintainable code that other team members can easily understand, adapt, and extend. Author Nicholas Zakas assembled this collection of best practices as a front-end tech leader at Yahoo!, after completing his own journey from solo hacker to team player. He also includes rules recommended by other industry authorities. Use these tips and techniques to help your team set aside individual preferences and function at a higher level. Establish specific code conventions for your team Use tools such as JSLint and JSHint to keep your team on track Adopt style guidelines, such as basic formatting, to help your team produce uniform code Apply several programming practices to solve problems and improve code quality Create an automated JavaScript build system using a variety of utilities Integrate browser-based JavaScript testing with tools such as the YUI Test Selenium Driver

Writing Readable Code

Maintainable JavaScript

Three years after the first edition of this book was released, there have been several advances in the techniques and technology of JavaScript in the browser. This Second Edition has been thoroughly updated to include the latest versions of all web browsers. The book also introduces newer techniques and related technologies such as canvas, E4X, and JavaScript 2.0. Setting the stage by covering JavaScript in HTML, the book then explores the core of JavaScript, ECMAScript, to give you an understanding of the language's basic syntax, data types, statements, and memory management.

Se for semelhante à maioria dos desenvolvedores, você costuma usar JavaScript frequentemente para criar aplicações web interativas e de resposta rápida. O problema é que todas essas linhas de código em JavaScript podem tornar suas aplicações mais lentas. Este livro revela técnicas e estratégias que irão ajudar a eliminar gargalos de desempenho durante o desenvolvimento. Você aprenderá como melhorar o tempo de execução, a realização de downloads, a interação com o DOM, o ciclo de vida da página e muito mais. O engenheiro de frontend do Yahoo!, Nicholas C. Zakas, e cinco outros especialistas em JavaScript – Ross Harmes, Lecome, Steven Levithan, Stoyan Stefanov e Matt Sweeney – demonstram métodos ideais para a inclusão de código na página, oferecendo dicas de programação que poderão ajudá-lo a encontrar os problemas uma vez que seu site esteja no ar. • Identifique códigos problemáticos e adote alternativas mais eficientes para cumprir tarefas específicas. • Melhore seus scripts aprendendo como o JavaScript armazena e acessa dados. • Implemente código em JavaScript de uma forma que não prejudique a interação com o DOM. • Utilize técnicas de otimização para melhorar o desempenho do tempo de execução. • Descubra maneiras de garantir que sua UI seja sempre responsiva. • Obtenha uma comunicação cliente-servidor mais rápida. • Use um sistema de criação para reduzir seus arquivos e a compressão HTTP para enviá-los ao navegador. É recomendável um entendimento de JavaScript de intermediário a avançado. “JavaScript de Alto Desempenho cobre todas as questões relacionadas ao desempenho que os desenvolvedores atuais de JavaScript devem ter em mente. O livro certamente ampliou minha lista de boas práticas sobre desempenho.” - Steve Souders “JavaScript de Alto Desempenho é um acervo impressionante de tópicos, dicas e truques para JavaScript compilados por especialistas no assunto: tudo em um único livro. Trata-se de uma leitura imprescindível para todos que desejam escrever JavaScript de alta qualidade.” - Venkat Udayasankar, guru de desempenho de pesquisas, Yahoo! Search

JavaScript de Alto Desempenho

Se for semelhante à maioria dos desenvolvedores, você costuma usar JavaScript frequentemente para criar aplicações web interativas e de resposta rápida. O problema é que todas essas linhas de código em JavaScript podem tornar suas aplicações mais lentas. Este livro revela técnicas e estratégias que irão ajudar a eliminar gargalos de desempenho durante o desenvolvimento. Você aprenderá como melhorar o tempo de execução, a realização de downloads, a interação com o DOM, o ciclo de vida da página e muito mais. O engenheiro de frontend do Yahoo!, Nicholas C. Zakas, e cinco outros especialistas em JavaScript – Ross Harmes, Lecome, Steven Levithan, Stoyan Stefanov e Matt Sweeney – demonstram métodos ideais para a inclusão de código na página, oferecendo dicas de programação que poderão ajudá-lo a encontrar os problemas uma vez que seu site esteja no ar. •Identifique códigos problemáticos e adote alternativas mais eficientes para cumprir tarefas específicas. •Melhore seus scripts aprendendo como o JavaScript armazena e acessa dados. •Implemente código em JavaScript de uma forma que não prejudique a interação com o DOM. •Utilize técnicas de otimização para melhorar o desempenho do tempo de execução. •Descubra maneiras de garantir que sua UI seja sempre responsiva. •Obtenha uma comunicação cliente-servidor mais rápida. •Use um sistema de criação para reduzir seus arquivos e a compressão HTTP para enviá-los ao navegador.

Construa interfaces mais rápidas para aplicações web

Se você já usou uma linguagem orientada a objetos mais tradicional, como C++ ou Java, o JavaScript provavelmente não parecerá uma linguagem orientada a objetos. Ela não tem conceito de classes, e você nem mesmo precisa definir objetos para começar a programar. Mas não se engane – o JavaScript é uma linguagem orientada a objetos incrivelmente eficiente e expressiva, que coloca muitas decisões de design diretamente em suas mãos. Em Princípios de Orientação a Objetos em JavaScript, Nicholas C. Zakas explora minuciosamente a natureza orientada a objetos do JavaScript, revelando a implementação única de herança e outras características fundamentais da linguagem. Você irá aprender: • A diferença entre valores primitivos e de referência • O que faz com que as funções em JavaScript sejam únicas • As diversas maneiras de criar objetos • Como definir seus próprios construtores • Como entender e trabalhar com protótipos • Padrões de herança para tipos e objetos Princípios de Orientação a Objetos em JavaScript proporcionará até mesmo aos desenvolvedores mais experientes um entendimento mais profundo de JavaScript. Descubra os segredos de como os objetos funcionam em JavaScript, para que você escreva um código mais claro, flexível e eficiente.

Princípios de Orientação a Objetos em JavaScript

Christian Heilmann

Aaron Gustafson

Christopher Murphy

Rachel Andrew

Mat Marquis

Vitaly Friedman

Addy Osmani

Paul Tero

Nishant Kothary

Tim Kadlec

Corey Vilhauer

Harry Roberts

Marko Dugonjić

The book is focused around practical techniques, strategies and approaches. Will feature valuable insights into large-scale projects, adaptive interfaces, customer support, user psychology and typography. Will also uncover smart front-end strategies, obscure back-end techniques and find out what it takes to improve website performance for faster and more robust apps.

New Perspectives on Web Design

If you're like most developers, you rely heavily on JavaScript to build interactive and quick-responding web applications. The problem is that all of those lines of JavaScript code can slow down your apps. This book reveals techniques and strategies to help you eliminate performance bottlenecks during development. You'll learn how to improve execution time, downloading, interaction with the DOM, page life cycle, and more. Yahoo! frontend engineer Nicholas C. Zakas and five other JavaScript experts—Ross Harmes, Julien Lecomte, Steven Levithan, Stoyan Stefanov, and Matt Sweeney—demonstrate optimal ways to load code onto a page, and offer programming tips to help your JavaScript run as efficiently and quickly as possible. You'll learn the best practices to build and deploy your files to a production environment, and tools that can help you find problems once your site goes live. Identify problem code and use faster alternatives to accomplish the same task Improve scripts by learning how JavaScript stores and accesses data Implement JavaScript code so that it doesn't slow down interaction with the DOM Use optimization techniques to improve runtime performance Learn ways to ensure the UI is responsive at all times Achieve faster client-server communication Use a build system to minify files, and HTTP compression to deliver them to the browser

Nicholas C. Zakas

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