XMLHttpRequests

What is an Http request?
- Life of a request
  - https://dev.to/dangolant/things-i-brushed-up-on-this-week-the-http-request-lifecycle-
- REST
- Verbs
- Headers
- Status codes
Example w/ curl
Now how do we send a request with a browser?
Websites of the early era required a complete page load upon each request (https://en.wikipedia.org/wiki/Ajax_(programming))
- This is inefficient and provides a bad user experience with full reloads on each action. Example: MapQuest in the early days.
AJAX
- Gmail in 2004 and Google Maps in 2005
- A way for browsers to send requests asyncronously! 🎉
- In 2006, W3C releated XMLHttpRequest specification
XMLHttpRequest
- Guide: https://developer.mozilla.org/en-US/docs/Web/API/XMLHttpRequest

API calls

Open API's without need for auth tokens (https://github.com/public-apis/public-apis/blob/master/README.md). Use one for example.
Create new HTML file
Create a button that will have an event listener
Retrieve data from api with XMLHttpRequest obj
...but callbacks? joke