Why javascript does not have access to all the cookies of the browser and how to get it?

Good night!
There are these cookies, for some reason I can't get through javascript when you call them by name, the answer is that they are not, but in fact they are
So the question is, how can using javascript or chrome extensions to access them and modify them, or delete them?
July 2nd 19 at 13:33
2 answers
July 2nd 19 at 13:35
In other words they are not in any way modify or remove the client part? - glenna_Hudson commented on July 2nd 19 at 13:38
: if the HttpOnly flag is no. - vito.Hoeg commented on July 2nd 19 at 13:41
in other words, if it could be done, then lost the very concept. I would have left the site to read the cookies of Google. After to go it would be a matter of technique. - arnold2 commented on July 2nd 19 at 13:44
July 2nd 19 at 13:37
https://developer.chrome.com/extensions/cookies (suitable only for khromovskikh extensions)

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