Smooth scroll if #hash is on page

scroll.js

$(document).ready(function(){
	$('a[href*="#"]').on('click',function (e) {
		if(!($(this.hash).length)) return true;
	
		e.preventDefault();

		var target = this.hash;
		var $target = $(target);

		$('html, body').stop().animate({
			'scrollTop': $target.offset().top
		}, 900, 'swing', function () {
			window.location.hash = target;
		});
	});
});

If you click on a link including a #hash this script checks if hash is on site and scrolls in this case. Otherwise it jumps to the url.

THANK YOU! This is the only code that's worked for me to keep the #hash in the link after smooth scroll.