L09 - Asynchronous programming

How to work with JavaScript in the browser and fetching data from external servers using asynchronous HTTP requests.

The lecture covers topics like:

• Asynchronous programming
• JSON
• AJAX
• await/async
• promises
• Fetch
• Web storage
• Cookies

Presentation

View the presentation "Asynchronous programming" with Johan Leitet.

The slides are here.

There is an English version and a Swedish version of the presentation.

• English version (2018), 1h 38min.
• Swedish version (2019), 1h 35min.

Resources

1. In the (free online) book "JavaScript for impatient programmers", review the following chapters.

   • Ch 36 Asynchronous programming in JavaScript
   • Ch 37 Promises for asynchronous programming
   • Ch 38 Async functions
   • Ch 42 Creating and parsing JSON (JSON)

2. REST clients development tools

   • Advanced REST Client
   • Postman

External resources

• Google developers: Introduction to Fetch

• MDN

  • Fetch
  • Using Fetch
  • XMLHttpRequest
  • Async await
  • Web Storage API

• JSON

  • JSON.org
  • MDN Global object JSON

• Exploring ES6

  • Arrow functions
  • Promises for asynchronous programming

• Exploring ES2016 and ES2017

  • Async functions

• CORS

• More

  • Watch: What the heck is the event loop anyway?
  • Read: Promises (Skip "Bonus round: Promises and Generators")
  • Watch: Autocomplete
  • Watch: Autocomplete + Promises extended demo
  • Watch: Fun fun functions - Await Async