دانلود کتاب اسرار نینجای جاوا اسکریپت، ویرایش سوم

JavaScript began as a 10-day project to add a scripting language to Netscape’s web browser back in 1995. Today, it’s one of the most widely used programming languages in the world. Look around and you’ll see it everywhere: websites, servers, mobile and desktop apps, game consoles, IoT devices, and even your car. It’s truly remarkable for a single language to be so useful across so many domains. How did it make the leap from the web browser to the wider world of computing? In a word: evolution. For years, JavaScript had a reputation for being painfully slow and full of strange quirks, with none of the niceties that developers enjoyed with other languages: rich IDE integration, static analysis and debugging tools, a package distribution system, and so on. As the only language that could run in web browsers, developers grudgingly tolerated it, but few of them loved it. But gradually, that changed. Competition between browser vendors led to faster JavaScript engines, and cooperation between them led to the ECMAScript standards process for new language features (see Section 1.1.) The emergence of the Node.js runtime led to an explosion of JavaScript applications outside of the browser, along with a package distribution system and a rich set of tools for JavaScript written in JavaScript (see Section 1.2). Thanks to that evolution, JavaScript is both enormously versatile and—for most purposes—reasonably performant. And the developer experience has improved dramatically. The kind of rich IDE integration and static analysis that JavaScript developers could only dream of are now available, thanks to TypeScript. TypeScript has become so popular that it’s become synonymous with JavaScript development for many developers. We even considered naming this book Secrets of the TypeScript Ninja! But ultimately, TypeScript is just a tool for developing JavaScript. This book integrates TypeScript in that spirit. We’ll briefly introduce TypeScript in Section 1.3 and show you how to use it in Chapter 2. This book is designed to give you a thorough understanding of JavaScript fundamentals. Armed with that knowledge, you’ll be able to create robust and performant applications in any domain you choose. Our approach is to introduce language concepts from the ground up, covering the basics before working our way up to “secret” techniques that distinguish the JavaScript Ninja from the ordinary developer. We hope you enjoy your ninja training. Ganbatte!