How to know if the scrollbars has appeared in browser (jQuery)?


if (document.documentElement.scrollHeight === document.documentElement.clientHeight) {
    //There is no vertical scrollbar
}

Entire Function code : 

function ScrollToTop() {
if (document.documentElement.scrollHeight == document.documentElement.clientHeight) {
$(‘#bottom’).hide(); //There is no vertical scrollbar
}
else {
$(‘#bottom’).show();
}
$(‘html, body’).animate({ scrollTop: 0 }, ‘slow’);
}

You can also use

var hasScrollbar = $('body').outerHeight() > $(window).height();
 
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