jQuery : How to convert Ajax to Fetch API in JavaScript?

jQuery : How to convert Ajax to Fetch API in JavaScript?
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As promised, I have a hidden feature that I want to share with you.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
After that, type the word 'awesome' on your keyboard.
The progress bar on YouTube will be altered to a flashing rainbow.

A brief introduction of myself,
Hi, my name is Delphi, nice to meet you.
I am available to help you find solutions to your inquiries.
jQuery : How to convert Ajax to Fetch API in JavaScript?
If you need more specific information, let me know by leaving a comment or starting a chat.
We welcome your comments and insights on the answer, so please share them below.
I will express my appreciation for your answer by 'hearting' it.
API How to to JavaScript? convert Fetch in jQuery : Ajax