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    JavaScript Patterns JumpStart Guide (Clean up your JavaScript Code)
    JavaScript Patterns JumpStart Guide (Clean up your JavaScript Code)
    JavaScript Patterns JumpStart Guide (Clean up your JavaScript Code)
    Ebook82 pages42 minutes

    JavaScript Patterns JumpStart Guide (Clean up your JavaScript Code)

    By Dan Wahlin

    4.5/5

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    About this ebook

    Are you writing a lot of JavaScript code and finding that it's growing into an unmanageable mess? In this concise and focused jump start guide you'll learn how to fix common problems such as function spaghetti code and pollution of the global scope, and gain the skills necessary to write clean JavaScript code. By applying patterns, JavaScript code can be made more modular and easier to work with and that's really the overall purpose of this guide. You'll be provided with focused tips and sample code that will help you write maintainable, re-usable and consistent JavaScript.

    Key concepts covered in this guide include:

    • Function spaghetti code and why it's bad
    • The role of closures
    • Namespaces and global scope
    • Different techniques for defining variables
    • Working with JavaScript's prototype property
    • The Prototype Pattern
    • The Revealing Module Pattern
    • The Revealing Prototype Pattern

    The sample code shown is also available as a download.

    LanguageEnglish
    PublisherDan Wahlin
    Release dateAug 30, 2013
    ISBN9781301370443
    JavaScript Patterns JumpStart Guide (Clean up your JavaScript Code)
    Author

    Dan Wahlin

    Dan Wahlin founded The Wahlin Group (http://www.TheWahlinGroup.com) which provides consulting and training services on Web technologies such as JavaScript, jQuery, AngularJS, SPAs, HTML5, ASP.NET and SharePoint. He's also one of the top authors at Pluralsight.com and has published several courses covering a range of technologies. Dan is a Microsoft Regional Director and has been awarded Microsoft's MVP award multiple times for ASP.NET, Connected Systems and Silverlight. Dan is on the INETA Speaker's Bureau, speaks at conferences and user groups around the world and has written several books on Web technologies. Dan blogs at http://weblogs.asp.net/dwahlin and writes regular columns for various technical magazines. Follow Dan on Twitter @DanWahlin.

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      Book preview

      JavaScript Patterns JumpStart Guide (Clean up your JavaScript Code) - Dan Wahlin

      About the Author

      Welcome to the JavaScript Patterns JumpStart Guide! My name is Dan Wahlin and I'll be walking you through a lot of great information that will change how you write JavaScript and result in more maintainable applications. I've been building JavaScript applications since the 90s and love writing about and working with the language. If you're interested in keeping up with all of the great enhancements in the JavaScript language as well as various frameworks, check out my blog or follow me on Twitter.

      rss Blog

      http://weblogs.asp.net/dwahlin

      Twitter Twitter

      @DanWahlin

      Table of Contents

      About the Author

      Sample Code

      Introduction

      Function Spaghetti Code

      What are Closures?

      Namespaces and Global Scope

      Defining Variables

      The Prototype Pattern

      Revealing Module Pattern

      Creating Multiple Objects with the Revealing Module Pattern

      Revealing Prototype Pattern

      Working with the JavaScript this Keyword

      Using the JavaScript prototype Property to Structure and Extend Code

      Getting Started with JavaScript Prototyping

      Overriding with Prototype

      Conclusion

      Sample Code

      A lot of effort went into formatting the code shown in this book to make it easy to read and follow. However, different devices display text in different ways so I've made the book's sample code available at http://tinyurl.com/StructuringJSCode so that you can view it in your favorite editor as well.

      Introduction

      JavaScript has come a long way since the mid-90s when I first started working with it in Netscape Navigator. Back in the day I thought JavaScript was painful to use but over the years I've learned to love it and appreciate what it offers as a language. JavaScript is quite flexible and can perform a wide variety of tasks on both the client-side and server-side. In fact, I used to prefer it to VBScript on the server-side when writing classic ASP applications, and today we have server-side frameworks such as Node.js that are JavaScript based. With the rise of HTML5 and new features such as the Canvas API and SVG, JavaScript is more important than ever when building applications. As applications use more JavaScript, it's important the code is structured in a way that's easy to work with and maintain.

      Although JavaScript isn't designed with the concept of classes or object-oriented programming in mind as with C# or Java (at least not until ECMAScript 6 comes out and is supported by all of the browsers), with a little work you can achieve similar results. In this guide I'll discuss a few popular techniques, strategies, and patterns for structuring JavaScript to encapsulate functionality much like classes do, hide private members, and provide a better overall re-use strategy and maintenance story in applications. These techniques work well across all of the major browser out there.

      The patterns that will be discussed include the following:

      Prototype Pattern

      Revealing Module Pattern

      Revealing Prototype Pattern

      Are there more patterns? Certainly! However, the goal of this jumpstart guide to focus on

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