The purpose of this class is to introduce to the student:

• How to use the fetch API to do AJAX calls
• The structure and use of Promises
• The this keyword and its relationship with scope

FIRST HALF (12.00 - 13.30)

1. The structure and use of Promises

Notes:

• It's the accepted solution to callback hell
• It's a way to introduce asynchronicity to your application
• Makes asynchronous code read like it's synchronous

Show examples

2. How to use the fetch API to do AJAX calls

Notes:

• Modern replacement of XMLHttpRequest
• Uses Promise structure
• The Fetch API is defined in the browser
• Only modern browsers support it (show caniuse.com)

Do exercise

SECOND HALF (14.00 - 16.00)

3. The this keyword and its relationship with scope

Notes: