// go back:
window.history.back()
// go forward:
window.history.forward()
// go to specific point:
window.history.go(-2) // go back 2 pages, 0 is current page
window.history.go(0) // refreshes current page
window.history.go() // refreshes current page
// get number of pages in history
let numberOfEntries = window.history.length
var newurl = window.location.protocol + "//" + window.location.host + window.location.pathname + '?newParameter=1';
window.history.pushState({ path: newurl }, '', newurl);