High Performance JavaScript

Author: Nicholas C. Zakas
Publisher: "O'Reilly Media, Inc."
ISBN: 9781449388744
Format: PDF, ePub, Docs
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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

Even Faster Web Sites

Author: Steve Souders
Publisher: "O'Reilly Media, Inc."
ISBN: 9780596555849
Format: PDF, Docs
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Performance is critical to the success of any web site, and yet today's web applications push browsers to their limits with increasing amounts of rich content and heavy use of Ajax. In this book, Steve Souders, web performance evangelist at Google and former Chief Performance Yahoo!, provides valuable techniques to help you optimize your site's performance. Souders' previous book, the bestselling High Performance Web Sites, shocked the web development world by revealing that 80% of the time it takes for a web page to load is on the client side. In Even Faster Web Sites, Souders and eight expert contributors provide best practices and pragmatic advice for improving your site's performance in three critical categories: JavaScript—Get advice for understanding Ajax performance, writing efficient JavaScript, creating responsive applications, loading scripts without blocking other components, and more. Network—Learn to share resources across multiple domains, reduce image size without loss of quality, and use chunked encoding to render pages faster. Browser—Discover alternatives to iframes, how to simplify CSS selectors, and other techniques. Speed is essential for today's rich media web sites and Web 2.0 applications. With this book, you'll learn how to shave precious seconds off your sites' load times and make them respond even faster. This book contains six guest chapters contributed by Dion Almaer, Doug Crockford, Ben Galbraith, Tony Gentilcore, Dylan Schiemann, Stoyan Stefanov, Nicole Sullivan, and Nicholas C. Zakas.

Mastering JavaScript High Performance

Author: Chad R. Adams
Publisher: Packt Publishing Ltd
ISBN: 1784395099
Format: PDF
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If you are a JavaScript developer with some experience in development and want to increase the performance of JavaScript projects by building faster web apps, then this book is for you. You should know the basic concepts of JavaScript.

High Performance Web Sites

Author: Steve Souders
Publisher: "O'Reilly Media, Inc."
ISBN: 9780596550691
Format: PDF, Kindle
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Want your web site to display more quickly? This book presents 14 specific rules that will cut 25% to 50% off response time when users request a page. Author Steve Souders, in his job as Chief Performance Yahoo!, collected these best practices while optimizing some of the most-visited pages on the Web. Even sites that had already been highly optimized, such as Yahoo! Search and the Yahoo! Front Page, were able to benefit from these surprisingly simple performance guidelines. The rules in High Performance Web Sites explain how you can optimize the performance of the Ajax, CSS, JavaScript, Flash, and images that you've already built into your site -- adjustments that are critical for any rich web application. Other sources of information pay a lot of attention to tuning web servers, databases, and hardware, but the bulk of display time is taken up on the browser side and by the communication between server and browser. High Performance Web Sites covers every aspect of that process. Each performance rule is supported by specific examples, and code snippets are available on the book's companion web site. The rules include how to: Make Fewer HTTP Requests Use a Content Delivery Network Add an Expires Header Gzip Components Put Stylesheets at the Top Put Scripts at the Bottom Avoid CSS Expressions Make JavaScript and CSS External Reduce DNS Lookups Minify JavaScript Avoid Redirects Remove Duplicates Scripts Configure ETags Make Ajax Cacheable If you're building pages for high traffic destinations and want to optimize the experience of users visiting your site, this book is indispensable. "If everyone would implement just 20% of Steve's guidelines, the Web would be adramatically better place. Between this book and Steve's YSlow extension, there's reallyno excuse for having a sluggish web site anymore." -Joe Hewitt, Developer of Firebug debugger and Mozilla's DOM Inspector "Steve Souders has done a fantastic job of distilling a massive, semi-arcane art down to a set of concise, actionable, pragmatic engineering steps that will change the world of web performance." -Eric Lawrence, Developer of the Fiddler Web Debugger, Microsoft Corporation

Maintainable JavaScript

Author: Nicholas Zakas
Publisher: "O'Reilly Media, Inc."
ISBN: 1449327680
Format: PDF, Mobi
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An introduction to writing code with JavaScript covers such topics as style guidelines, programming practices, and automation.

High Performance Responsive Design

Author: Tom Barker
Publisher: "O'Reilly Media, Inc."
ISBN: 1491949961
Format: PDF, ePub
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Annotation Responsive web design's dirty secret today is how bloated everyone's implementations are. Many developers are loading sites full of the styles, images, and JavaScript for all of their break points - and designers are starting to complain about responsive web design's performance implications. This book will help you build a site that reaches top performance on all platforms.

JavaScript Cookbook

Author: Shelley Powers
Publisher: "O'Reilly Media, Inc."
ISBN: 1449395929
Format: PDF
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Why reinvent the wheel every time you run into a problem with JavaScript? This cookbook is chock-full of code recipes that address common programming tasks, as well as techniques for building web apps that work in any browser. Just copy and paste the code samples into your project—you’ll get the job done faster and learn more about JavaScript in the process. You'll also learn how to take advantage of the latest features in ECMAScript 5 and HTML5, including the new cross-domain widget communication technique, HTML5's video and audio elements, and the drawing canvas. You'll find recipes for using these features with JavaScript to build high-quality application interfaces. Create interactive web and desktop applications Work with JavaScript objects, such as String, Array, Number, and Math Use JavaScript with Scalable Vector Graphics (SVG) and the canvas element Store data in various ways, from the simple to the complex Program the new HTML5 audio and video elements Implement concurrent programming with Web Workers Use and create jQuery plug-ins Use ARIA and JavaScript to create fully accessible rich internet applications

HTML5 and JavaScript Projects

Author: Jeanine Meyer
Publisher: Apress
ISBN: 1430240334
Format: PDF, ePub, Mobi
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HTML5 and JavaScript Projects shows you how to build on your basic knowledge of HTML5 and JavaScript to create substantial HTML5 applications. Through the many interesting projects you can build in this book, you'll build your HTML5 skills for your future projects, and extend the core skills you may have learned with its companion book, The Essential Guide to HTML5. HTML5 and JavaScript Projects covers the most important areas of HTML5 that you'll want to know how to program, including: video, and audio, databases, localStorage, and geolocation. The projects have been carefully selected to help you build your HTML5 and JavaScript programming skills. You'll build games and applications, such as video jigsaws, recipe archives, paper dolls, and many more captivating examples. Each project starts out with an introduction to the basic HTML5 and JavaScript concepts covered and then includes specific, appealing examples explained step-by-step. You'll also discover line-by-line explanations for every single line of code—we'll make sure that you can fully understand what each line of code does, so that you can easily take that understanding and apply it to your own HTML5 projects. HTML5 and JavaScript Projects: Shows how to produce applications combining Canvas drawings, photos, and videos Explains how to incorporate Google Maps and geolocation into your projects Reveals how to build applications requiring persistent data, storing the information locally or on a database on the server

Pro JavaScript Performance

Author: Tom Barker
Publisher: Apress
ISBN: 1430247495
Format: PDF, Kindle
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Performance is a hugely important area of web development. If your site runs slowly, users are going to leave, and the problem only grows as your site gets more popular. Pro JavaScript Performance gives you the tools you need to keep your sites smooth and responsive no matter how many users you have. Best practices are changing or becoming redefined continually because of changes and optimizations at the interpreter level, and differences in system configuration, and network speeds. This is exacerbated by the quickened release schedule that most browsers have adopted. Just as important as following best practices is the ability to measure your own performance, so that you can adjust as times change, and so that you can note the subtle nuances in your own code and define your own best practices by your own observations. This book gives you the tools to observe and track the performance of your web applications over time from multiple perspectives, so that you are always aware of, and can fix, all aspects of your performance. What you’ll learn Describes the different aspects of performance, and explores the tools for quantifying and improving performance Provides tactical solutions for creating tools to measure the performance of your own web applications Learn to apply performance best practices, and how to quantify your results Who this book is for Pro JavaScript Performance is written for advanced JavaScript users and web developers. You will need a strong understanding of JavaScript to get the most from this book.

Data Structures and Algorithms with JavaScript

Author: Michael McMillan
Publisher: "O'Reilly Media, Inc."
ISBN: 1449373968
Format: PDF, Docs
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As an experienced JavaScript developer moving to server-side programming, you need to implement classic data structures and algorithms associated with conventional object-oriented languages like C# and Java. This practical guide shows you how to work hands-on with a variety of storage mechanisms—including linked lists, stacks, queues, and graphs—within the constraints of the JavaScript environment. Determine which data structures and algorithms are most appropriate for the problems you’re trying to solve, and understand the tradeoffs when using them in a JavaScript program. An overview of the JavaScript features used throughout the book is also included. This book covers: Arrays and lists: the most common data structures Stacks and queues: more complex list-like data structures Linked lists: how they overcome the shortcomings of arrays Dictionaries: storing data as key-value pairs Hashing: good for quick insertion and retrieval Sets: useful for storing unique elements that appear only once Binary Trees: storing data in a hierarchical manner Graphs and graph algorithms: ideal for modeling networks Algorithms: including those that help you sort or search data Advanced algorithms: dynamic programming and greedy algorithms