document.addEventListener('DOMContentLoaded', function (){ 
var $hashes = document.querySelectorAll('.hash, .menu-list-ul li a'); 
Array.prototype.forEach.call($hashes, function ($el){ 
$el.addEventListener('click', function (event){ 
event.preventDefault(); 
var propertyName = $el.dataset.propertyName; 
var $target = document.getElementById($el.dataset.propertyName); 
history.replaceState('', document.title, '#' + propertyName); 
if ($target) { 
$target.scrollIntoView(); 
} 
} 
); 
} 
); 
} 
);