change-url-without-reload.js

change-url-without-reload.js

// change-url-without-reload.js v1
function changeURLWithoutReload(newUrl){
	let url = getURL();
	return window.history.pushState(undefined, undefined, url + '/' + newUrl.replace(/^\//, ''));
};

// getURL.js v1
function getURL(url = window.location.href){
	return url.split(/[?#&]/)[0].replace(/\/+$/, '');
};

gistfile1.txt

let url = window.location.href
if( (/\d{5,}/).test(url) ) {
    window.history.pushState({}, '', url.replace(/\d{5,}/, 'newlink') );
} else {
    window.history.pushState({}, '', url + 'pin/newlink/' );
}