fetch is a modern, powerful, and flexible interface built directly into the browser. It uses JavaScript , which allow developers to write asynchronous code that reads like synchronous code, avoiding the dreaded "Callback Hell" associated with older XHR implementations.
By mastering the concepts of , you unlock the ability to build fluid, fast, and user-friendly web experiences that feel less like traditional websites and more like native desktop or mobile applications. Javascript and AJAX
You can listen to xhr.onreadystatechange for more granular control, but onload (which triggers at readyState 4) is cleaner. fetch is a modern, powerful, and flexible interface