jQuery Σελίδα κύλισης προόδου στο site σας!

<style>
.scrollindicator{
width: 100%;
height: 7px; /* height of progress bar */
display: block;
background: white;
left: 0;
bottom: 0; /* dock progress bar to bottom of page (change to "top" for top instead) */
cursor: pointer;
position: fixed;
z-index: 1000000;
visibility: hidden;
-webkit-transition: height .2s ease;
transition: height .2s ease;
}
.scrollprogress{
position: absolute;
width: 100%;
height: 100%;
background: purple; /* background color of progress bar */
-webkit-transform: translate3d(-100%,0,0);
transform: translate3d(-100%,0,0);
=-webkit-transition: -webkit-transform .4s ease;
transition: transform .4s ease; /* animate progress bar? Remove to disable */
}
</style>
<script src="https://ajax.googleapis.com/ajax/libs/jquery/3.1.1/jquery.min.js"></script>
<script>
/***********************************************
* jQuery Σελίδα κύλισης προόδου στο site σας!
* Project Page: http://www.foulscode.com/2018/02/jquery-site.html
***********************************************/
jQuery(function($){
var growmouseover = [true, '25px'] // magnify progress bar onmouseover? [Boolean, newheight]
///////// No need to edit beyond here /////////
var $indicatorparts = $(document.body).append('<div class="scrollindicator"><div class="scrollprogress"></div></div>')
var $indicatorMain = $indicatorparts.find('div.scrollindicator')
var $scrollProgress = $indicatorparts.find('div.scrollprogress')
var indicatorHeight = $indicatorMain.outerHeight()
var transformsupport = $scrollProgress.css('transform')
transformsupport = (transformsupport == "none" || transformsupport =="")? false: true
function syncscrollprogress(){
   var winheight = $(window).height()
   var docheight = $(document).height()
   var scrollTop = $(window).scrollTop()
   var trackLength = docheight - winheight
   var pctScrolled = Math.floor(scrollTop/trackLength * 100) // gets percentage scrolled (ie: 80 NaN if tracklength == 0)
$scrollProgress.css('transform', 'translate3d(' + (-100 + pctScrolled) + '%,0,0)')
}
if (transformsupport){
$indicatorMain.css('visibility', 'visible')
$indicatorMain.on('click', function(e){
var trackLength = $(document).height() - $(window).height()
var scrollamt = e.clientX/($(window).width()-32) * trackLength
$('html,body').animate({scrollTop: scrollamt}, 'fast')
})
if (growmouseover[0]){
$indicatorMain.on('mouseenter touchstart', function(e){
$(this).css('height', growmouseover[1])
e.stopPropagation()
})
$indicatorMain.on('mouseleave', function(e){
$(this).css('height', indicatorHeight)
})
$(document).on('touchstart', function(e){
$indicatorMain.css('height', indicatorHeight)
})
}
$(window).on("scroll load", function(){
requestAnimationFrame(syncscrollprogress)
})
}
})
</script>