November 2018
Beginner
132 pages
2h 57m
English
Content preview from Server Side development with Node.js and Koa.js Quick Start Guide
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The application object
The application object in Koa is an object containing the Koa application instance. It also contains a list of the middleware functions in the application. It is responsible for managing and executing the middleware in a cascaded manner. It is also responsible for managing some key aspects of the application, as we will soon see in some of the following examples. Here is an excerpt from the Koa official documentation:
"A Koa application is an object containing an array of middleware functions which are composed and executed in a stack-like manner upon request. Koa is similar to many other middleware systems that you may have encountered such as Ruby's Rack, Connect, and so on—however, a key design decision was made ...
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