isURL function return false for urls with underscore, e.g. `my_url.domain.com`. It works for url: `myurl.my_dom_ain.com`. Underscore is allowed for domain name, in that case isURL should return true.
isURL function return false for urls with underscore, e.g.
my_url.domain.com.It works for url:
myurl.my_dom_ain.com.Underscore is allowed for domain name, in that case isURL should return true.