how to get the domain url in javascript code example

Example 1: javascript get current url

var currentUrl = window.location.href;

Example 2: get domain name javascript

window.location.hostname

Example 3: how to extract domain name of url of current page in javascript

var url = window.location.href;
var domain = url.replace('http://','').replace('https://','').split(/[/?#]/)[0];