how to know the url of a website in js code example

Example 1: how to get browser url in javascript

function getURL() {
  alert("The URL of this page is: " + window.location.href);
}

Example 2: javascript url check

const isAbsoluteUrl = url => /^[a-z][a-z0-9+.-]*:/.test(url);

// Example
isAbsoluteUrl('https://1loc.dev');          // true
isAbsoluteUrl('https://1loc.dev/foo/bar');  // true
isAbsoluteUrl('1loc.dev');                  // false
isAbsoluteUrl('//1loc.dev');