/**
* Modified on scroll event
*/
var position = $( window ).scrollTop();
function scrollUp() {
var scroll = $( window ).scrollTop();
if ( scroll > 600 ) {
if ( scroll > position ) {
$( '.pt-goto-sticky' ).removeClass( 'is-visible' );
} else {
$( '.pt-goto-sticky' ).addClass( 'is-visible' );
}
} else {
$( '.pt-goto-sticky' ).removeClass( 'is-visible' );
}
position = scroll;
}
scrollUp();
var scrolling = false;
$( window ).on( 'scroll', function() {
scrolling = true;
} );
setInterval( function() {
if ( scrolling ) {
scrolling = false;
scrollUp();
}
}, 200 );