Book Image

Express Web Application Development

By : Hage Yaaapa
Book Image

Express Web Application Development

By: Hage Yaaapa

Overview of this book

Express is a minimal and flexible node.js web application framework, providing a robust set of features for building single and multi-page, and hybrid web applications. It provides a thin layer of features fundamental to any web application, without obscuring features that developers know and love in node.js. "Express Web Application Development" is a comprehensive guide for those looking to learn how to use the Express web framework for web application development. Starting with the initial setup of the Express web framework, "Express Web Application Development" helps you to understand the fundamentals of the framework. By the end of "Express Web Application Development", you will have acquired enough knowledge and skills to create production-ready Express apps. All of this is made possible by the incremental introduction of more advanced topics, starting from the very essentials. On the way to mastering Express for application development, we teach you the more advanced topics such as routes, views, middleware, forms, sessions, cookies and various other aspects of configuring an Express application. Jade; the recommended HTML template engine, and Stylus; the CSS pre-processor for Express, are covered in detail. Last, but definitely not least, Express Web Application Development also covers practices and setups that are required to make Express apps production-ready.
Table of Contents (15 chapters)
Express Web Application Development
About the Author
About the Reviewers

A primer on HTTP response

To understand the types of response Express is capable of generating and have a better control over them, it is important that you have some technical understanding about the underlying HTTP protocol's response format. So, let's go over it real quick and cover the basics.


HTTP response is a small part of the much bigger HTTP protocol. As a web developer it is an added advantage if you have a good understanding of the protocol you are working with. You can read about the HTTP protocol in detail at

The data sent by an HTTP server in response to a request is called an HTTP response message. It is composed of a status code, headers, and optional associated data, which is technically referred to as the body of the message.

The body is presented to the user as plain text, rendered HTML, image, file download, and so on. The status code and the headers are hidden from a regular user, but the browser requires them to process the body appropriately...