Possible to display ping to website in browser? (ie, "your ping to site: 49ms")

I do hope you are all doing well! I have a question related to showing ping in a browser. I need to make a website that displays the user's ping to that site (ie, user goes to sitename.com, and the site says "Your ping to this site is 49ms." Ideally, this would be the actual ping between the user's PC and the host server of the website.

My first question is, is this possible? My second question is, what is the most non-invasive way to do this? It would awesome if the site could achieve this function without asking the user for permissions.

Any information/insight would be greatly appreciated. Would also be wonderful if the solution allowed the user to test pings of other IP addresses!

Thanks, Matt