JAVASCRIPT

remove all parameters from url javascript

window.location.search = '';
var onlyUrl = window.location.href.replace(window.location.search,'');

js delete all url params

var url = new URL('http://demourl.com/path?topic=main');

// set search property to blank
url.search = '';

var new_url = url.toString();

// output : http://demourl.com/path
console.log(new_url);