You need to somehow determine the width of the scrollbar, for example 10px or how many there.

My method returns always 0

var scrollbarWidth = $(document).outerWidth() - $('body').outerWidth(); alert(scrollbarWidth); 

How to determine the size of the scrollbar?

    2 answers 2

    On request scrollbar width javascript is such a solution on stackoverflow

     function getScrollBarWidth () { var inner = document.createElement('p'); inner.style.width = "100%"; inner.style.height = "200px"; var outer = document.createElement('div'); outer.style.position = "absolute"; outer.style.top = "0px"; outer.style.left = "0px"; outer.style.visibility = "hidden"; outer.style.width = "200px"; outer.style.height = "150px"; outer.style.overflow = "hidden"; outer.appendChild (inner); document.body.appendChild (outer); var w1 = inner.offsetWidth; outer.style.overflow = 'scroll'; var w2 = inner.offsetWidth; if (w1 == w2) w2 = outer.clientWidth; document.body.removeChild (outer); return (w1 - w2); }; 
    • @VenZell, thank you! - ModaL

     function widthScroll(){ var div = document.createElement('div'); div.style.overflowY = 'scroll'; div.style.width = '50px'; div.style.height = '50px'; div.style.visibility = 'hidden'; document.body.appendChild(div); var scrollWidth = div.offsetWidth - div.clientWidth; document.body.removeChild(div); return scrollWidth; } console.log(widthScroll());