How to check with javascript if connection is local host?

Question

I want to have a check in my javascript if the page loading up is on my local machine.

The reason why I want to do that is that when I developing I like to make sure

Answer 1

Based on the above comments th following regular expression has helped me to verify if the url is 'localhost', any IP adress IPv4 or IPv6.

window.location.hostname.match(/localhost|[0-9]{2,3}\.[0-9]{2,3}\.[0-9]{2,3}\.[0-9]{2,3}|::1|\.local|^$/gi)