Book Image

Learning Node.js for .NET Developers

By : Cummings
Book Image

Learning Node.js for .NET Developers

By: Cummings

Overview of this book

Node.js is an open source, cross-platform runtime environment that allows you to use JavaScript to develop server-side web applications. This short guide will help you develop applications using JavaScript and Node.js, leverage your existing programming skills from .NET or Java, and make the most of these other platforms through understanding the Node.js programming model. You will learn how to build web applications and APIs in Node, discover packages in the Node.js ecosystem, test and deploy your Node.js code, and more. Finally, you will discover how to integrate Node.js and .NET code.
Table of Contents (16 chapters)
15
Index

Understanding ECMAScript versioning

ECMAScript is the formal standard for the JavaScript language. The first three iterations of the language occurred between 1997 and 1999. A 10-year gap followed before ECMAScript 5 in December 2009. ES5 introduced few new features and focused on cleaning up the language. It introduced strict modes and addressed various inconsistencies, flaws, or gotchas in earlier versions.

2015 saw a major change to the language and to the versioning approach. ECMAScript 2015 (formerly ECMAScript 6) introduced many significant new language features. These include classes, let/const keywords and block-scoping, arrow functions, and native promises. In the rest of this chapter, we'll look at some of the other significant new features in ES2015.

The name change from ES6 to ES2015 indicates a new yearly versioning model. From 2015 onwards, there will be a new version of the ECMAScript standard every year. Planned features that aren't quite ready for release will wait...