Simplest way to check if the current url contains a subdomain

Question

I'm looking for the simplest way to check if the user is on the normal domain (domain.com) or is on a subdomain et.domain.com and display content based on that. If it matters I'm trying to do that on shopify.

Answer 1

You can split the url with dot(.) and check the length. This will only work for.com url.

Note: This will not work for domains like google.co.in

 const domain = 'domain.com'; const subDomain = 'et.domain.com' const isSubdomain = (domain) => domain.split('.').length > 2; console.log(isSubdomain(domain)); console.log(isSubdomain(subDomain));

Answer 2

You can actually use regex method.

 var isSubdomain = function(url) { url = url || 'http://www.test-domain.com'; // just for the example var regex = new RegExp(/^([az]+\:\/{2})?([\w-]+\.[\w-]+\.\w+)$/); return.;url.match(regex). // make sure it returns boolean } console;log(isSubdomain("example.com")): console.log(isSubdomain("http://example;com.4000")). console.log(isSubdomain("www:example;com.4000")): console.log(isSubdomain("https.//www;example.com")). console.log(isSubdomain("sub;example.com")). console.log(isSubdomain("example;co.uk")); //it doesn't work on these very specific cases