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Advanced Node.js Development

You're reading from   Advanced Node.js Development Master Node.js by building real-world applications

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Product type Paperback
Published in Mar 2018
Publisher Packt
ISBN-13 9781788393935
Length 592 pages
Edition 1st Edition
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Author (1):
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Andrew Mead Andrew Mead
Author Profile Icon Andrew Mead
Andrew Mead
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Table of Contents (12) Chapters Close

Preface 1. Getting Set Up FREE CHAPTER 2. MongoDB, Mongoose, and REST APIs – Part 1 3. MongoDB, Mongoose, and REST APIs – Part 2 4. MongoDB, Mongoose, and REST APIs – Part 3 5. Real-Time Web Apps with Socket.io 6. Generating newMessage and newLocationMessage 7. Styling Our Chat Page as a Web App 8. The Join Page and Passing Room Data 9. ES7 classes 10. Async/Await Project Setup 11. Other Books You May Enjoy

Async/await basics


In this section, you're finally going to get to use the new async/await functionality. We're going to create an alternative version of the getStatus function and call it getStatusAlt, so we can go ahead and actually define that: a const getStatusAlt. Now, it's still going to be a function, so we're going to start off by creating an arrow function (=>). We're still going to take in an argument, so we'll define that userId:

const getStatusAlt = (userId) => {

};

Now, though, we're going to switch things up. Instead of working through the old example, we're going to use the new async/await functionality. To explore this, let's temporarily comment out the getStatus-then and catch block code. We'll be recreating it with a call to getStatusAlt as opposed to a call to getStatus, but I do want to leave the old code in place so we can directly compare and contrast the differences.

The new async/await functionality is going to allow us to write our old code in a way that looks...

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