Java is an Object-Oriented language; JavaScript ain't. JavaScript provides no integrated support of type-inheritance, encapsulation or polymorphism - the cornerstones of the Object Oriented paradigm.
However, OO programming can be SIMULATED in JavaScript. There's more than one way to achieve this effect. In this short and illuminating title, Crawford delineates one such way, which relies on some peculiar features JavaScript has in common with functional programming languages, such as "Scheme". (Study the ASP.NET AJAX framework's client side, for a completely different way to go about it. Gallo et al.'s "ASP.NET AJAX in Action" explores this framework brilliantly).
In parallel, this book also serves as a well-reasoned best-practices manual for writing good JavaScript code (a la Crawford...). Crawford's simultaneously a fierce critic, and a starry-eyed lover of the language.
Her smiles, her frowns, her ups, her downs are, clearly, second nature to him, and, like a great tour guide, he'll walk you through the grotesque and the beautiful of this strange, and, oddly, remarkably popular, programming language.
This book is neither an introduction to JavaScript nor a reference thereto. It's certainly not about DOM scripting. The novice JavaScripter would benefit little from it, and, in fact, might find it utterly disheartening, due to Crawford's explicit, harsh criticism. Turn, instead, to the first and third parts of Flanagan's excellent "JavaScript, The Definitive Guide".
In the appendices of this books, you'll find a superbly succinct-yet-exhaustive descrpition of the popular JSON data-interchange format, of which Crawford himself is the designer. A complete listing of a JSON parser written in JavaScript is also available for you to delight in.
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From the Preface
This is a book about the JavaScript programming language. It is intended for programmers who, by happenstance or curiosity, are venturing into JavaScript for the first time. It is also intended for programmers who have been working with JavaScript at a novice level and are now ready for a more sophisticated relationship with the language. JavaScript is a surprisingly powerful language. Its presents some challenges, but being a small language, it is easily mastered.
My goal here is to help you to learn to think in JavaScript. I will show you the components of the language and start you on the process of discovering the ways those components can be put together. This is not a reference book. It is not exhaustive about the language and its quirks. It doesn't contain everything you'll ever need to know. That stuff you can easily find online. Instead, this book just contains the things that are really important.
This is not a book for beginners. Someday I hope to write a JavaScript: The First Parts book, but this is not that book. This is not a book about Ajax or web programming. The focus is exclusively on JavaScript, which is just one of the languages the web developer must master.
Sobre el autor
Cannot learn JavaScript from this book
Perhaps if you are a highly intelligent person, you may learn JavaScript from this book. But otherwise it is a bewildering and frustrating book to read. One gets the feeling this was an academic paper written for his colleagues and he added a little 'introduction' material so he could sell the book to the rest of us. There is almost no explanation. This is unlike any other programming language book I have read. What a waste of money. I wish he had actually tried to teach JavaScript through a set of tutorials. At the beginning he starts off very witty and entertaining and one feels this book is a gem. But then as you go on your realize you're not learning JavaScript at all, and then and realize this book is either shallow or it's meant for people who already learned JavaScript. This is a really bad book.
Opiniones más destacadas de otros países
Jared Jonathan Ortega Ponce
Super interesante.
Calificado en México el 21 de agosto de 2023
George Bills
Good, in depth coverage of Javascript, but looking a bit dated
Calificado en Australia el 4 de julio de 2019
Matteo Ambrosi
Ottimo per principianti ed esperti
Calificado en Italia el 30 de junio de 2016
