Smooth Scroll

onClick_To_Top.js

$('#return-to-top').click(function() {      // When arrow is clicked
    $('body,html').animate({
        scrollTop : 0                       // Scroll to top of body
    }, 500);
});

onscroll_header.js

// ===== Scroll to Top ==== 
$(window).scroll(function() {
    if ($(this).scrollTop() >= 50) {        // If page is scrolled more than 50px
        $('#return-to-top').fadeIn(200);    // Fade in the arrow
    } else {
        $('#return-to-top').fadeOut(200);   // Else fade out the arrow
    }
});

smooth_scroll.js

// SMOOTH SCROLLING TO ANCHORS

$('a[href*="#"]')
// Remove links that don't actually link to anything
.not('[href="#"]')
.click(function(event) {
    // On-page links
    if (
        location.pathname.replace(/^\//, '') == this.pathname.replace(/^\//, '') &&
        location.hostname == this.hostname
    ) {
        // Figure out element to scroll to
        var target = $(this.hash);
        target = target.length ? target : $('[name=' + this.hash.slice(1) + ']');
        // Does a scroll target exist?
        if (target.length) {
            // Only prevent default if animation is actually gonna happen
            event.preventDefault();
            $('html, body').animate({
                scrollTop: target.offset().top
            }, 1000, function() {
                //<!-- Start Comment Callback after animation
                // Must change focus! /End Comment-->
                var $target = $(target);
                $target.focus();
                if ($target.is(":focus")) { // Checking if the target was focused
                    return false;
                } else {
                    $target.attr('tabindex','-1'); // Adding tabindex for elements not focusable
                    $target.focus(); // Set focus again
                };
                
            });
            
        }
    }
});

track_section_class.js

$('section').each(function () {
  if($(this).position().top <= $(document).scrollTop() && ($(this).position().top + $(this).outerHeight()) > $(document).scrollTop()) {
    console.log($(this).attr('class'));
  }
});