jQuery : Set cookie (with JS) for whole domain not specific page

jQuery : Set cookie (with JS) for whole domain not specific page
To Access My Live Chat Page,
On Google, Search for "hows tech developer connect"

As promised, I have a secret feature that I want to reveal to you.
This is a YouTube's feature which works on Desktop.
First, Ensure that the video is playing before proceeding.
Then, type the letters 'awesome' on your keyboard as the next step.
Your YouTube progress indicator will turn into a shimmering rainbow.

An introduction to myself in a few words,
Hey, I am Delphi.
I can help you find the answers you are looking for.
jQuery : Set cookie (with JS) for whole domain not specific page
Don't hesitate to leave a comment or start a chat if you have a more specific question.
Don't hesitate to provide your answer or insights by leaving a comment below.
A 'heart' from me will indicate my appreciation for your answer.
specific page : for Set JS) (with domain not whole jQuery cookie