Book Image

CoffeeScript Application Development

By : Ian Greenleaf Young
Book Image

CoffeeScript Application Development

By: Ian Greenleaf Young

Overview of this book

JavaScript is becoming one of the key languages in web development. It is now more important than ever across a growing list of platforms. CoffeeScript puts the fun back into JavaScript programming with elegant syntax and powerful features. CoffeeScript Application Development will give you an in-depth look at the CoffeeScript language, all while building a working web application. Along the way, you'll see all the great features CoffeeScript has to offer, and learn how to use them to deal with real problems like sprawling codebases, incomplete data, and asynchronous web requests. Through the course of this book you will learn the CoffeeScript syntax and see it demonstrated with simple examples. As you go, you'll put your new skills into practice by building a web application, piece by piece. You'll start with standard language features such as loops, functions, and string manipulation. Then, we'll delve into advanced features like classes and inheritance. Learn advanced idioms to deal with common occurrences like external web requests, and hone your technique for development tasks like debugging and refactoring. CoffeeScript Application Development will teach you not only how to write CoffeeScript, but also how to build solid applications that run smoothly and are a pleasure to maintain.
Table of Contents (19 chapters)
CoffeeScript Application Development
About the Author
About the Reviewers

Chapter 9. Debugging

With any sufficiently large application, bugs are an inevitability. Our project has gone well so far, but sooner or later we are bound to run into some unexpected failures. In this chapter, we'll learn how to deal with errors using some powerful new tools that allow us to debug in a browser directly against our CoffeeScript source. We will:

  • Add some data to our application

  • Uncover a bug that we haven't noticed before now

  • Debug the error using tools that let us work natively with CoffeeScript in the browser

  • Fix the source of the error

If you haven't worked with a debugger before, there will be a lot of new concepts to cover in this chapter. It's okay, though—we'll work through a full debugging workflow that you can re-use, practice, and refine as you deal with bugs in your own work.