add to top of html document code example

Example 1: javascript go to top of page

window.scroll({
 top: 0, 
 left: 0, 
 behavior: 'smooth' 
});

Example 2: javascript go to top of page

window.scroll({top: 0, left: 0});
//Or with jQuery
$('html,body').scrollTop(0);
//with animation
$('html, body').animate({ scrollTop: 0 }, 'fast');