Ajax & XHR Introduction

The video tutorial introduces Ajax, a set of web technologies for asynchronous data exchange between client and server, highlighting its components like XHR and JSON. It explains how Ajax enhances web interactivity by allowing partial page updates without reloading. The tutorial covers working with local and public APIs, including authentication and CORS. It also discusses core technologies like XHR and Fetch API, and external libraries such as Axios and jQuery for making HTTP requests.

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