While Ajax usually makes applications run smoother, it can also introduce strange performance and resilience issues. In this course, Sasha Vodnik provides you with the details you need to create fast and reliable web applications using Ajax in the background. Sasha dives into the basics of XHR—the fundamental building block of Ajax—as well as the newer Fetch API. Plus, he explains how to write Ajax whether you're using AngularJS, React, or jQuery. Throughout the course, he shares tips for making smart code design decisions.

Topics include:
* Setting up your environment
* Obtaining API keys
* Working with XMLHttpRequest
* Working with the Fetch API
* Creating an Ajax request in jQuery
* Working with data returned from a jQuery Ajax request
* Creating an Ajax request in AngularJS
* Using an Ajax request with React
* Structuring Ajax requests