Book Image

Opa Application Development

By : Li Wenbo
Book Image

Opa Application Development

By: Li Wenbo

Overview of this book

Opa is a full-stack Open Source web development framework for JavaScript that lets you write secure and scalable web applications. It generates standard Node.js/MongoDB applications, natively supports HTML5 and CSS and automates many aspects of modern web application programming. It handles all aspects of web programming written in one consistent language and compiled to web standards.Opa Application Development is a practical,hands-on guide that provides you with a number of step-by-step exercises. It covers almost all aspects of developing a web application with Opa, which will help you take advantage of the real power of Opa, as well as building a secure, powerful web application rapidly.Opa Application Development dives into all concepts and components required to build a web application with Opa. The first half of this book shows you all of the basic building blocks that you will need to develop an Opa application, including the syntax of Opa, web development aspects, client and server communication and slicing, plugin, database, and so on. By the end of the book you will have yourself created a complete web application along with a game: Pacman!
Table of Contents (18 chapters)
Opa Application Development
About the Author
About the Reviewers

Chapter 5. Communicating between Client and Server

An important difference between Opa and most other web development languages is that other technologies typically require the use of multiple languages in order to write client-side and server-side code, whereas in Opa we can do both using a single language. This gives us the ability to invoke a remote procedure just like a local function. We do not need to send Ajax requests and parse response data ourselves. In this chapter, we will first talk about how to slice server and client code using Opa and what we can do to help the slicer when automatic slicing is not enough. Then, we will introduce three primitives for communication between clients and the server: session, cell, and network.