JavaScript Patterns: Build Better Applications with Coding and Design Patterns

4 JavaScript Design Patterns You Should Know

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O'Reilly Media, Inc. JavaScript Patterns, the image of a European partridge, and related trade .. Pro JavaScript Design Patterns by Ross Hermes and Dustin Diaz (Apress) JavaScript coding patterns are the main topic of the book. have lying around, this is a much better approach than creating long parent-child in-. What's the best approach for developing an application with JavaScript? This book Build Better Applications with Coding and Design Patterns. By Stoyan.

Don't Make Me Think: Learning JavaScript Design Patterns. Head First JavaScript Programming. Stranger in a Strange Land. The Ruby Programming Language. Thinking, Fast and Slow. The Science Fiction Megapack: Steal Like an Artist. The Power of Habit. The Ultimate Hitchhiker's Guide to the Galaxy. Red Seas Under Red Skies. The Tenth Anniversary Edition. The 4-Hour Workweek, Expanded and Updated. The Lies of Locke Lamora. How to Win Friends and Influence People. A Dance with Dragons.

The Name of the Wind. This book helps you answer that question with numerous JavaScript coding patterns and best practices. If you're an experienced developer looking to solve problems related to objects, functions, inheritance, and other language-specific categories, the abstractions and code templates in this guide are id What's the best approach for developing an application with JavaScript? If you're an experienced developer looking to solve problems related to objects, functions, inheritance, and other language-specific categories, the abstractions and code templates in this guide are ideal -- whether you're writing a client-side, server-side, or desktop application with JavaScript.

Technical and architect of YSlow 2. You'll also learn about anti-patterns: Explore useful habits for writing high-quality JavaScript code, such as avoiding globals, using single var declarations, and more Learn why literal notation patterns are simpler alternatives to constructor functions Discover different ways to define a function in JavaScript Create objects that go beyond the basic patterns of using object literals and constructor functions Learn the options available for code reuse and inheritance in JavaScript Study sample JavaScript approaches to common design patterns such as Singleton, Factory, Decorator, and more Examine patterns that apply specifically to the client-side browser environment Paperback , pages.

To see what your friends thought of this book, please sign up. To ask other readers questions about JavaScript Patterns , please sign up. Lists with This Book. Oct 25, Rob rated it really liked it Recommends it for: If you're a JavaScript developer, you would be wise to have this on your bookshelf--nestled nicely between JavaScript: The three make a nice little troika. And read them in that order: Many of these patterns are language-agnostic--and you're likely to recognize them from "The Gang of Four"--but Stefanov puts them in their JavaScript party dresses and takes them out to the ball.

Stefanov is also a lucid and concise author, clearly illustrating his points about these design patterns; the text is accessible--easy to follow and digest--and he is careful to clearly define words and terms that might be ambiguous or commonly misunderstood e. JavaScript patterns makes a great transition guide for intermediate developers--the men and women who have stopped confusing jQuery-the-library with JavaScript-the-language--the folks who are ready to re-evaluate their approach software development with JavaScript.

This is for the folks that made it through Crockford's The Good Parts knowing that they learned something but also feeling less-than-certain about how to apply that something.

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This is the follow-on; JavaScript Patterns is the application of those lessons. And then after you've written your clean, maintainable, scalable applications--then you make the jump to Zakas' High Performance JavaScript to tune things just a little bit further. So you're probably wondering then: The four stars comes mostly from two niggling points: As a consequence, since I'd read the others and quite a few others above and beyond those two , there is quite a bit of information in there that I'd seen before.

This is not a Bad Thing; sometimes it pays to see information presented again--to help it sink in or else to gain another perspective on it. Sometimes and I've written this before you were just hoping for The book could have taken another quick editorial pass for spelling and grammar. The one that stuck out at me was right in the intro to Chapter 6: An in-depth overview, but an overview nonetheless.

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Stefanov is careful to "keep the browser out of it" and dedicates only one chapter Chapter 8: DOM and Browser Patterns to the subject; though everyone's favorite host environment does creep in a couple of times, in a couple of examples. View all 3 comments. Dec 23, Adrian Li rated it really liked it.

This is a good book and most people who work with Javascript should spend at least a couple hours going through it. But there is a caveat: This book was published in , and there are many things that are talked about, which we really don't have to worry about anymore. In any case, you need to read through this book in a smart manner. Don't force yourself to go through This is a good book and most people who work with Javascript should spend at least a couple hours going through it.

Don't force yourself to go through absolutely everything, and definitely skip some sections if it's quite obvious that you won't really need to go through them in detail since a lot of today's best practices avoid some of the mentioned patterns completely. Nevertheless, this is an important book to read. And if you have a nuanced reading strategy like I mentioned above , you can probably get through this book within 3 hours or so and learn a decent amount while doing so.

Feb 28, Greenicicle rated it liked it Shelves: So far I'm a little disappointed that practices like "write sensible comments" and "indent properly" are really listed as patterns, especially when the book claims to be targeted to professional devs. But I've still got a bunch of pages to go through. The title does not lie: There is a focus on organizational patterns object creation, inhheritance. Of these, there is a large variety of variants; mostly presented in an evolutionary chain the le So far I'm a little disappointed that practices like "write sensible comments" and "indent properly" are really listed as patterns, especially when the book claims to be targeted to professional devs.

Of these, there is a large variety of variants; mostly presented in an evolutionary chain the leads to increasingly better solutions. This is interesting for a an understanding why a pattern in recommended, it's not the most compact way of representation on the other hand. There is a lack of macroscopic, task-oriented patterns. This is not a book learning about common patterns in general, applied to JavaScript. I found reading JavaScript patterns beneficial; coming from C as my primary language it filled some of the gaps on how objects and funtions can be utilized to create a richer programming platform.

For that purpose however, I found "The Good Parts" more compact. Only a small part of JavaScript Patterns is about design patterns. Much more pages are spent on best practices and the deployment story. While these parts are very useful, they may not be what you are looking for. The Singleton pattern is a one example I like to pick to illustrate some of the problems with the book. In his book Stoyan Stefanov keeps going and going and uses 5 pages with workarounds. This is great if you must implement a Singleton, but most likely you are better off if you just would stop forcing it into JavaScript.

As long as you read this book as a way to write JavaScript and not as the definitive guide on JavaScript Patterns you can learn a lot. Sep 23, Diego Higuchi rated it really liked it.

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One example is using an office printer. After reviewing the Module , Prototype , Observer , and Singleton design patterns, you should be able to identify these patterns and use them in the wild. Since we are returning an object, we will prefix the prototype object with a function. How to write a great review. We appreciate your feedback. The four stars comes mostly from two niggling points: This event system allows code to define application-specific events that can pass custom arguments containing values needed by the subscriber.

One of the many advantages of classes is encapsulation - protecting states and behaviors from being accessed from other classes. The module pattern allows for public and private plus the lesser-know protected and privileged access levels. Modules should be Immediately-Invoked-Function-Expressions IIFE to allow for private scopes - that is, a closure that protect variables and methods however, it will return an object instead of a function. This is what it looks like:. Code outside of our closure is unable to access these private variables since it is not in the same scope.

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Let's take a more concrete implementation:. However, when outside the module, contents are unable to be referenced. A variation of the module pattern is called the Revealing Module Pattern. The purpose is to maintain encapsulation and reveal certain variables and methods returned in an object literal. The direct implementation looks like this:. Although this looks much cleaner, an obvious disadvantage is unable to reference the private methods.

This can pose unit testing challenges. Similarly, the public behaviors are non-overridable. Any JavaScript developer has either seen the keyword prototype , confused by the prototypical inheritance, or implemented prototypes in their code.

The Prototype design pattern relies on the JavaScript prototypical inheritance. The prototype model is used mainly for creating objects in performance-intensive situations. The objects created are clones shallow clones of the original object that are passed around. One use case of the prototype pattern is performing an extensive database operation to create an object used for other parts of the application. If another process needs to use this object, instead of having to perform this substantial database operation, it would be advantageous to clone the previously created object.

Prototype Design Pattern on Wikipedia.

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To clone an object, a constructor must exist to instantiate the first object. Next, by using the keyword prototype variables and methods bind to the object's structure. Let's look at a basic example:. The constructor allows the creation of a single TeslaModelS object.

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When a creating new TeslaModelS object, it will retain the states initialized in the constructor. Additionally, maintaining the function go and stop is easy since we declared them with prototype. A synonymous way to extend functions on the prototype as described below:.