Get second level domain name from URL

Question

Is there a way to get top level domain name from the url

for e.g., "https://images.google.com/blah" => "google"

I found this:

var domain = new URL(pageUrl).hostname; 

but it gives me "images.google.com" instead of just google.

Unit tests I have are:

https://images.google.com   => google
https://www.google.com/blah => google
https://www.google.co.uk/blah => google
https://www.images.google.com/blah => google

Answer 1

How about this?

location.hostname.split('.').reverse()[1]

Answer 2

Here's my naive take on solving the issue.

url.split('.').reverse()[1].split('//').reverse()[0]

Supports subdomains, but won't support public suffix SLDs.