Metric counter output from domain view?

Question

JavaScript

How to write a js condition to display counters depending on the subdomain address? The site is implemented through multisite
Example:
if www=mysite.ru {
Yandex-counter
}
if www=site1.mysite{
Yandex-counter1
}
if www=site2.mysite{
Yandex-counter2
}

Answer 1

function extractHostname(url) {
    var hostname;
    //find & remove protocol (http, ftp, etc.) and get hostname

    if (url.indexOf("//") > -1) {
        hostname = url.split('/')[2];
    }
    else {
        hostname = url.split('/')[0];
    }

    //find & remove port number
    hostname = hostname.split(':')[0];
    //find & remove "?"
    hostname = hostname.split('?')[0];

    return hostname;
}

switch(extractHostname(window.location.href)) {
    case 'site1.domain.com':
           ///код для site1
    break;

    case 'site2.domain.com':
        ///код для site2
     break;

    default:
        //код, если нет предыдущих совпадений
}

Answer 2

(function(m,e,t,r,i,k,a){m[i]=m[i]||function(){(m[i].a=m[i].a||[]).push(arguments)};
m[i].l=1*new Date();k=e.createElement(t),a=e.getElementsByTagName(t)[0],k.async=1,k.src=r,a.parentNode.insertBefore(k,a)})
(window, document, "script", "https://mc.yandex.ru/metrika/tag.js", "ym");

var domain_name = window.location.hostname;

let metrics = {};
metrics["domain1.ru"] = 11223344;
metrics["domain2.com"] = 33556677;
metrics["domain3.su"] = 88776655;

ym(metrics[domain_name], "init", {clickmap: true, webvisor: true});