var dd= window.location.href;

var ind = dd.indexOf('0/');
var str = dd.slice(ind+2)
console.log(str)
if (str != 0)
{alert(str);}

var xxx = document.querySelector('.xxx');
xxx.addEventListener('click', function(e){
	if(e.target != e.currentTarget){
	e.preventDefault();
	var data = e.target.id
	url = "/" + data
	history.pushState(data, null, url)
	alert(data);
	}
  e.stopPropagation();
}, false)

///HTML
<div class="xxx">
  <a href="#" id="1">1</a>
  <a href="#" id="2">2</a>
  <a href="#" id="3">3</a>
</div>