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Server Side development with Node.js and Koa.js Quick Start Guide

You're reading from   Server Side development with Node.js and Koa.js Quick Start Guide Build robust and scalable web applications with modern JavaScript techniques

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Product type Paperback
Published in Nov 2018
Publisher Packt
ISBN-13 9781789345391
Length 132 pages
Edition 1st Edition
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Olayinka Omole Olayinka Omole
Author Profile Icon Olayinka Omole
Olayinka Omole
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Modern JavaScript

Before we get into Node.js and writing code in Koa, we should take a quick look at the modern JavaScript ES6, ES7 (and beyond) syntaxes and the advantages they bring. ES6 (or ES 2015) and ES7 (or ES 2016) are major updates to the JavaScript language that brought a lot of new features and optimized the language for readability and simplicity.

Some of the key features introduced by ES6 include let, const, object destructuring, the spread operator, and so on. The async... await syntax, which is heavily used by Koa, is a new feature introduced in ES7. Some other key features introduced by ES7 are destructuring assignment (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Operators/Destructuring_assignment) and Observables (https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Object/observe). Beyond ES6 and Es7, a lot of...

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