JavaScript has finally grown up. Armed with a slew of new features, JavaScript now makes writing the code that powers your applications elegant, concise, and easy to understand. This book is a pragmatic guide to the new features introduced in JavaScript, starting with Edition 6 of ECMAScript, and ending with Edition 9. Using a "compare and contrast" approach, each chapter offers a deep dive into new features, highlighting how best to use them moving forward. As you progress through the book, you'll be offered multiple opportunities to see the new features in action, and in concert with one another. Backed by an example-driven writing style, you'll learn by doing, and get ready to embrace the new world of JavaScript. What You'll Learn Provide a deep exposition of the new features introduced in ES6 through ES9 Review how JavaScript's new features by-pass any limitations of an existing approachExamine the refactoring necessary to go from old to newDemonstrate how JavaScript's new features work in unison with each other Who This Book Is For New and experienced developers who wish to keep abreast of the changes to JavaScript and deepen their understanding of the language.

Summary Get Programming with JavaScript Next introduces the modern age of JavaScript programming with ES6 and ES7 without dragging you through confusing jargon and abstract examples you'll never use. In just 34 quick-fire sessions, you'll quickly be coding with the latest features and functions of ES6 and ES7! Purchase of the print book includes a free eBook in PDF, Kindle, and ePub formats from Manning Publications. About the Technology Great code is readable, bug-free, and maintainable. Modern JavaScript, aka JavaScript Next, makes it much, much easier to write great applications. New features introduced in ES2015 simplify the structure of your JavaScript projects and radically streamline async-oriented tasks like writing reactive applications and microservices. About the Book Get Programming with JavaScript Next introduces you to the new features included in the ES2015-and-later JavaScript releases. You'll learn example by example in 34 short lessons, each designed to drive home a specific skill. The coverage is complete: you'll explore new language syntax, declarations, and data types. You'll structure code with modules, replace callbacks with promises, and use classes instead of constructors. Every time you turn a page, complete an exercise, or study a carefully crafted illustration, you'll be one step closer to JavaScript mastery. What's Inside New features from ES2015 and later Writing asynchronous code Creating custom iterables Troubleshooting modules and classes About the Reader Written for web developers comfortable with standard JavaScript 5 features and coding style. About the Author J.D. Isaacks is a seasoned developer, a JavaScript instructor, and an open source maintainer. Table of Contents Lesson 1 - ECMAScript specification and the proposal process Lesson 2 - Transpiling with Babel Lesson 3 - Bundling modules with Browserify UNIT 1 - VARIABLES AND STRINGS Lesson 4 - Declaring variables with let Lesson 5 - Declaring constants with const Lesson 6 - New string methods Lesson 7 - Template literals Lesson 8 - Capstone: Building a domain-specific language UNIT 2 - OBJECTS AND ARRAYS Lesson 9 - New array methods Lesson 10 - Object.assign Lesson 11 - Destructuring Lesson 12 - New object literal syntax Lesson 13 - Symbol-a new primitive Lesson 14 - Capstone: Simulating a lock and key UNIT 3 - FUNCTIONS Lesson 15 - Default parameters and rest Lesson 16 - Destructuring parameters Lesson 17 - Arrow functions Lesson 18 - Generator functions Lesson 19 - Capstone: The prisoner's dilemma UNIT 4 - MODULES Lesson 20 - Creating modules Lesson 21 - Using modules Lesson 22 - Capstone: Hangman game UNIT 5 - ITERABLES Lesson 23 - Iterables Lesson 24 - Sets Lesson 25 - Maps Lesson 26 - Capstone: Blackjack UNIT 6 - CLASSES Lesson 27 - Classes Lesson 28 - Extending classes Lesson 29 - Capstone: Comets UNIT 7 - WORKING ASYNCHRONOUSLY Lesson 30 - Promises Lesson 31 - Advanced promises Lesson 32 - Async functions Lesson 33 - Observables Lesson 34 - Capstone: Canvas image gallery Appendix - Exercise answers

Go beyond design concepts—build dynamic data visualizations using JavaScript JavaScript and jQuery for Data Analysis and Visualization goes beyond design concepts to show readers how to build dynamic, best-of-breed visualizations using JavaScript—the most popular language for web programming. The authors show data analysts, developers, and web designers how they can put the power and flexibility of modern JavaScript libraries to work to analyze data and then present it using best-of-breed visualizations. They also demonstrate the use of each technique with real-world use cases, showing how to apply the appropriate JavaScript and jQuery libraries to achieve the desired visualization. All of the key techniques and tools are explained in this full-color, step-by-step guide. The companion website includes all sample codes used to generate the visualizations in the book, data sets, and links to the libraries and other resources covered. Go beyond basic design concepts and get a firm grasp of visualization approaches and techniques using JavaScript and jQuery Discover detailed, step-by-step directions for building specific types of data visualizations in this full-color guide Learn more about the core JavaScript and jQuery libraries that enable analysis and visualization Find compelling stories in complex data, and create amazing visualizations cost-effectively Let JavaScript and jQuery for Data Analysis and Visualization be the resource that guides you through the myriad strategies and solutions for combining analysis and visualization with stunning results.

Like it or not, JavaScript is everywhere these days—from browser to server to mobile—and now you, too, need to learn the language or dive deeper than you have. This concise book guides you into and through JavaScript, written by a veteran programmer who once found himself in the same position. Speaking JavaScript helps you approach the language with four standalone sections. First, a quick-start guide teaches you just enough of the language to help you be productive right away. More experienced JavaScript programmers will find a complete and easy-to-read reference that covers each language feature in depth. Complete contents include: JavaScript quick start: Familiar with object-oriented programming? This part helps you learn JavaScript quickly and properly. JavaScript in depth: Learn details of ECMAScript 5, from syntax, variables, functions, and object-oriented programming to regular expressions and JSON with lots of examples. Pick a topic and jump in. Background: Understand JavaScript’s history and its relationship with other programming languages. Tips, tools, and libraries: Survey existing style guides, best practices, advanced techniques, module systems, package managers, build tools, and learning resources.

Most programming languages contain good and bad parts, but JavaScript has more than its share of the bad, having been developed and released in a hurry before it could be refined. This authoritative book scrapes away these bad features to reveal a subset of JavaScript that's more reliable, readable, and maintainable than the language as a whole—a subset you can use to create truly extensible and efficient code. Considered the JavaScript expert by many people in the development community, author Douglas Crockford identifies the abundance of good ideas that make JavaScript an outstanding object-oriented programming language-ideas such as functions, loose typing, dynamic objects, and an expressive object literal notation. Unfortunately, these good ideas are mixed in with bad and downright awful ideas, like a programming model based on global variables. When Java applets failed, JavaScript became the language of the Web by default, making its popularity almost completely independent of its qualities as a programming language. In JavaScript: The Good Parts, Crockford finally digs through the steaming pile of good intentions and blunders to give you a detailed look at all the genuinely elegant parts of JavaScript, including: Syntax Objects Functions Inheritance Arrays Regular expressions Methods Style Beautiful features The real beauty? As you move ahead with the subset of JavaScript that this book presents, you'll also sidestep the need to unlearn all the bad parts. Of course, if you want to find out more about the bad parts and how to use them badly, simply consult any other JavaScript book. With JavaScript: The Good Parts, you'll discover a beautiful, elegant, lightweight and highly expressive language that lets you create effective code, whether you're managing object libraries or just trying to get Ajax to run fast. If you develop sites or applications for the Web, this book is an absolute must.

Take advantage of JavaScript’s power to build robust web-scale or enterprise applications that are easy to extend and maintain. By applying the design patterns outlined in this practical book, experienced JavaScript developers will learn how to write flexible and resilient code that’s easier—yes, easier—to work with as your code base grows. JavaScript may be the most essential web programming language, but in the real world, JavaScript applications often break when you make changes. With this book, author Eric Elliott shows you how to add client- and server-side features to a large JavaScript application without negatively affecting the rest of your code. Examine the anatomy of a large-scale JavaScript application Build modern web apps with the capabilities of desktop applications Learn best practices for code organization, modularity, and reuse Separate your application into different layers of responsibility Build efficient, self-describing hypermedia APIs with Node.js Test, integrate, and deploy software updates in rapid cycles Control resource access with user authentication and authorization Expand your application’s reach through internationalization

Little known to many, R works just as well with JavaScript—this book delves into the various ways both languages can work together. The ultimate aim of this work is to put the reader at ease with inviting JavaScript in their data science workflow. In that respect the book is not teaching one JavaScript but rather we show how little JavaScript can greatly support and enhance R code. Therefore, the focus is on integrating external JavaScript libraries and no prior knowledge of JavaScript is required. Key Features: ● Easy to pick up. ● An entry way to learning JavaScript for R. ● Covers topics not covered anywhere else. ● Easy to follow along.