JavaScript with Promises

Managing Asynchronous Code

Author: Daniel Parker

Publisher: "O'Reilly Media, Inc."

ISBN: 1491930748

Category: Computers

Page: 94

View: 577

DOWNLOAD NOW »

Asynchronous JavaScript is everywhere, whether you’re using Ajax, AngularJS, Node.js, or WebRTC. This practical guide shows intermediate to advanced JavaScript developers how Promises can help you manage asynchronous code effectively—including the inevitable flood of callbacks as your codebase grows. You’ll learn the inner workings of Promises and ways to avoid difficulties and missteps when using them. The ability to asynchronously fetch data and load scripts in the browser broadens the capabilities of JavaScript applications. But if you don’t understand how the async part works, you’ll wind up with unpredictable code that’s difficult to maintain. This book is ideal whether you’re new to Promises or want to expand your knowledge of this technology. Understand how async JavaScript works by delving into callbacks, the event loop, and threading Learn how Promises organize callbacks into discrete steps that are easier to read and maintain Examine scenarios you’ll encounter and techniques you can use when writing real-world applications Use features in the Bluebird library and jQuery to work with Promises Learn how the Promise API handles asynchronous errors Explore ECMAScript 6 language features that simplify Promise-related code
Release

Mastering JavaScript Object-Oriented Programming

Author: Andrea Chiarelli

Publisher: Packt Publishing Ltd

ISBN: 1785888269

Category: Computers

Page: 292

View: 1105

DOWNLOAD NOW »

Unleash the true power of JavaScript by mastering Object-Oriented programming principles and patterns About This Book Covering all the new Object-Oriented features introduced in ES6, this book shows you how to build large-scale web apps Build apps that promote scalability, maintainability, and reusability Learn popular Object-Oriented programming (OOP) principles and design patterns to build robust apps Implement Object-Oriented concepts in a wide range of front-end architectures Who This Book Is For This book is ideal for you if you are a JavaScript developers who wants to gain expertise in OOP with JavaScript to improve your web development skills and build professional quality web applications. What You Will Learn Master JavaScript's OOP features, including the one's provided by ES6 specification Identify and apply the most common design patterns such as Singleton, Factory, Observer, Model-View-Controller, and Mediator Patterns Understand the SOLID principles and their benefits Use the acquired OOP knowledge to build robust and maintainable code Design applications using a modular architecture based on SOLID principles In Detail ECMAScript 6 introduces several new Object-Oriented features that drastically change the way developers structure their projects. Web developers now have some advanced OOP functionality at their disposal to build large-scale applications in JavaScript. With this book, we'll provide you with a comprehensive overview of OOP principles in JavaScript and how they can be implemented to build sophisticated web applications. Kicking off with a subtle refresher on objects, we'll show you how easy it is to define objects with the new ES6 classes. From there, we'll fly you through some essential OOP principles, forming a base for you to get hands-on with encapsulation. You'll get to work with the different methods of inheritance and we'll show you how to avoid using inheritance with Duck Typing. From there, we'll move on to some advanced patterns for object creation and you'll get a strong idea of how to use interesting patterns to present data to users and to bind data. We'll use the famous promises to work with asynchronous processes and will give you some tips on how to organize your code effectively. You'll find out how to create robust code using SOLID principles and finally, we'll show you how to clearly define the goals of your application architecture to get better, smarter, and more effective coding. This book is your one-way ticket to becoming a JavaScript Jedi who can be counted on to deliver flexible and maintainable code. Style and approach This comprehensive guide on advanced OOP principles and patterns in JavaScript is packed with real-world use cases, and shows you how to implement advanced OOP features to build sophisticated web applications that promote scalability and reusability.
Release

Mastering JavaScript Promises

Author: Muzzamil Hussain

Publisher: Packt Publishing Ltd

ISBN: 1783985518

Category: Computers

Page: 188

View: 2750

DOWNLOAD NOW »

JavaScript is a tool for the gurus who create highly useful applications, but it has some limitations. To overcome these limitations, a concept called JavaScript promises is rising rapidly in popularity. Promises makes writing complex logics more manageable and easy. This book starts with an introduction to JavaScript promises and how it has evolved over time. You will learn the JavaScript asynchronous model and how JavaScript handles asynchronous programming. Next, you will explore the promises paradigm and its advantages. Finally, this book will show you how to implement promises in platforms used in project development including WinRT, jQuery, and Node.js.
Release

Eloquent JavaScript, 3rd Edition

A Modern Introduction to Programming

Author: Marijn Haverbeke

Publisher: No Starch Press

ISBN: 1593279515

Category: Computers

Page: 472

View: 7852

DOWNLOAD NOW »

Completely revised and updated, this best-selling introduction to programming in JavaScript focuses on writing real applications. JavaScript lies at the heart of almost every modern web application, from social apps like Twitter to browser-based game frameworks like Phaser and Babylon. Though simple for beginners to pick up and play with, JavaScript is a flexible, complex language that you can use to build full-scale applications. This much anticipated and thoroughly revised third edition of Eloquent JavaScript dives deep into the JavaScript language to show you how to write beautiful, effective code. It has been updated to reflect the current state of Java¬Script and web browsers and includes brand-new material on features like class notation, arrow functions, iterators, async functions, template strings, and block scope. A host of new exercises have also been added to test your skills and keep you on track. As with previous editions, Haverbeke continues to teach through extensive examples and immerses you in code from the start, while exercises and full-chapter projects give you hands-on experience with writing your own programs. You start by learning the basic structure of the JavaScript language as well as control structures, functions, and data structures to help you write basic programs. Then you'll learn about error handling and bug fixing, modularity, and asynchronous programming before moving on to web browsers and how JavaScript is used to program them. As you build projects such as an artificial life simulation, a simple programming language, and a paint program, you'll learn how to: - Understand the essential elements of programming, including syntax, control, and data - Organize and clarify your code with object-oriented and functional programming techniques - Script the browser and make basic web applications - Use the DOM effectively to interact with browsers - Harness Node.js to build servers and utilities Isn't it time you became fluent in the language of the Web? * All source code is available online in an inter¬active sandbox, where you can edit the code, run it, and see its output instantly.
Release

Learning Node.js

A Hands-On Guide to Building Web Applications in JavaScript

Author: Marc Wandschneider

Publisher: Addison-Wesley Professional

ISBN: 0134663721

Category: Computers

Page: 350

View: 4010

DOWNLOAD NOW »

This is the eBook of the printed book and may not include any media, website access codes, or print supplements that may come packaged with the bound book. Learning Node.js brings together the knowledge and JavaScript code needed to build master the Node.js platform and build server-side applications with extraordinary speed and scalability. You’ll start by installing and running Node.js, understanding the extensions it uses, and quickly writing your first app. Next, building on the basics, you’ll write more capable application servers and extend them with today’s most powerful Node.js tools and modules. Finally, you’ll discover today’s best practices for testing, running Node.js code on production servers, and writing command-line utilities. Throughout the book, author Marc Wandschneider teaches by walking the reader line-by-line through carefully crafted examples, demonstrating proven techniques for creating highly efficient applications and servers. The second edition updates coverage of Node.js to reflect changes in the technology and how it is used in the three years since the first edition was published: Explanation of Node's new versioning scheme Updated coverage of Streams New coverage of installation using pre-build installers rather than from source code New coverage of Mongoose in the section on MongoDB New information about deploying Node on Heroku and Azure Expansion of coverage on testing If you're a developer who wants to build server-side web applications with Node.js, Learning Node.js is your fatest route to success. Build Node.js solutions that leverage current JavaScript skills Master Node.js nonblocking IO and async programming Handle more requests and increase an application’s flexibility Use and write modules Perform common JSON/web server tasks Use browsers to generate pages on the fly via Ajax calls and template libraries Simplify development with the Express framework Create database back-ends using popular NoSQL and relational databases Deploy and run Node.js apps on Unix/macOS or Windows servers Deploy apps to Heroku and Microsoft Azure Support virtual hosts and SSL/HTTPS security Test Node.js programs that mix synchronous, async, and RESTful server API functionality
Release

Node. Js

JavaScript Based Framework. Easy Guide Book

Author: Rick L.

Publisher: Createspace Independent Publishing Platform

ISBN: 9781533639004

Category:

Page: 126

View: 5630

DOWNLOAD NOW »

Node.js JavaScript based framework. Easy Guide Book This book is an exploration of the Node.JS framework for JavaScript. The first part is an overview of what the framework is and how it is used. The kinds of applications which can be used for development have also been explained. Module dependencies in Node are then discussed. You will learn how to manage these for your Node application. The functions "Require" and "export" which are very useful in Node are explored. You will learn how to use these in your app. The use of promises in Node is also examined.. You will learn how to use promises so as to control the process of asynchronous flow in Node. Callbacks, which are very useful in Node are zlso explained. The process of management of the callback hell in Node apps, as well as promise methods are then covered in this book. In Node, one can execute multiple instances in a single process. After reading this book, you will be in a position to do this. You will also be guided on how to monitor the event loops. The following topics are discussed in this book:A Brief OverviewManagement of Module DependenciesRequire and ExportsAsynchronous Flow Control using PromiseManagement of Node.js callback HellPromise MethodsExecution of Multiple Instances in a Single ProcessLoopBack Node.js FrameworkEvent Loop MonitoringDownload your copy of " Node.js" by scrolling up and clicking "Buy Now With 1-Click" button.
Release

Learning JQuery Deferreds

Taming Callback Hell with Deferreds and Promises

Author: Terry Jones,Nicholas H. Tollervey

Publisher: "O'Reilly Media, Inc."

ISBN: 1449369375

Category: Computers

Page: 132

View: 530

DOWNLOAD NOW »

Orchestrating asynchronous function calls in JavaScript often leads to callback hell, but there is a reliable way to avoid this painful state of affairs. With this concise and simple guide, you’ll learn how to use jQuery deferreds and promises, an elegant approach for managing asynchronous calls in both client and server applications. This book contains 18 examples that use deferreds to solve progressively challenging real-world programming problems, along with 75 stimulating puzzles (and their solutions) that will help you understand how and when to use deferreds. Experienced JavaScript programmers will learn new tricks in a fun way, and become immersed in the practice of event-based programming. Understand the logic behind creating deferreds and returning promises Get a structured explanation of jQuery’s deferred API Delve into the dynamics of using deferreds Explore a broad collection of useful deferred recipes developed by the authors Gain hands-on experience by solving challenges that accompany each recipe Go deeper into deferreds: encounter novel abstractions and mind-bending use cases
Release

Secrets of the JavaScript Ninja

Author: John Resig,Bibeault,Josip Maras

Publisher: Manning Publications

ISBN: 9781617292859

Category: Computers

Page: 375

View: 1092

DOWNLOAD NOW »

More than ever, the web is a universal platform for all types of applications, and JavaScript is the language of the web. For anyone serious about web development, it's not enough to be a decent JavaScript coder. They need to be ninja-stealthy, efficient, and ready for anything. Secrets of the JavaScript Ninja, Second Edition dives below the surface and helps readers understand the deceptively-complex world of JavaScript and browser-based application development. It skips the basics, and dives into core JavaScript concepts such as functions, closures, objects, prototypes, promises, and so on. With examples, illustrations, and insightful explanations, readers will benefit from the collective wisdom of seasoned experts John Resig, Bear Bibeault, and Josip Maras. Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications.
Release

Programming Windows Store Apps with HTML, CSS, and JavaScript

Author: Kraig Brockschmidt

Publisher: Microsoft Press

ISBN: 0735695709

Category: Computers

Page: 1311

View: 4821

DOWNLOAD NOW »

Microsoft Press is pleased to offer the second edition of Kraig Brockschmidt's in-depth ebook on writing Windows Store apps using HTML, CSS3, and JavaScript on the Windows 8.1 platform. The ebook includes 20 chapters and 4 appendices. Download the PDF (30.1 MB) http://aka.ms/611111pdf Download the EPUB file (71.2 MB) http://aka.ms/611111epub Download the Mobi for Kindle file (113 MB) http://aka.ms/611111mobi Download Companion Files (132 MB) http://aka.ms/611111files
Release

Node.js Design Patterns

Author: Mario Casciaro,Luciano Mammino

Publisher: Packt Publishing Ltd

ISBN: 1785887386

Category: Computers

Page: 526

View: 6961

DOWNLOAD NOW »

Get the best out of Node.js by mastering its most powerful components and patterns to create modular and scalable applications with ease About This Book Create reusable patterns and modules by leveraging the new features of Node.js . Understand the asynchronous single thread design of node and grasp all its features and patterns to take advantage of various functions. This unique guide will help you get the most out of Node.js and its ecosystem. Who This Book Is For The book is meant for developers and software architects with a basic working knowledge of JavaScript who are interested in acquiring a deeper understanding of how to design and develop enterprise-level Node.js applications. Basic knowledge of Node.js is also helpful to get the most out of this book. What You Will Learn Design and implement a series of server-side JavaScript patterns so you understand why and when to apply them in different use case scenarios Become comfortable with writing asynchronous code by leveraging constructs such as callbacks, promises, generators and the async-await syntax Identify the most important concerns and apply unique tricks to achieve higher scalability and modularity in your Node.js application Untangle your modules by organizing and connecting them coherently Reuse well-known techniques to solve common design and coding issues Explore the latest trends in Universal JavaScript, learn how to write code that runs on both Node.js and the browser and leverage React and its ecosystem to implement universal applications In Detail Node.js is a massively popular software platform that lets you use JavaScript to easily create scalable server-side applications. It allows you to create efficient code, enabling a more sustainable way of writing software made of only one language across the full stack, along with extreme levels of reusability, pragmatism, simplicity, and collaboration. Node.js is revolutionizing the web and the way people and companies create their software. In this book, we will take you on a journey across various ideas and components, and the challenges you would commonly encounter while designing and developing software using the Node.js platform. You will also discover the "Node.js way" of dealing with design and coding decisions. The book kicks off by exploring the basics of Node.js describing it's asynchronous single-threaded architecture and the main design patterns. It then shows you how to master the asynchronous control flow patterns,and the stream component and it culminates into a detailed list of Node.js implementations of the most common design patterns as well as some specific design patterns that are exclusive to the Node.js world.Lastly, it dives into more advanced concepts such as Universal Javascript, and scalability' and it's meant to conclude the journey by giving the reader all the necessary concepts to be able to build an enterprise grade application using Node.js. Style and approach This book takes its intended readers through a comprehensive explanation to create a scalable and efficient real-time server-side apps.
Release