ACTIVE MENU ITEM ON SCROLL #JS #JAVASCRIPT #JQUERY

active_menu.js

var sections = $('.content section')
  , nav = $('.header-top')
  , nav_height = nav.outerHeight();

	$(window).on('scroll', function () {
		
		
		
	  var cur_pos = $(this).scrollTop();
	  
	  sections.each(function() {
		var top = $(this).offset().top - nav_height - 25,
			bottom = top + $(this).outerHeight();
		
		if (cur_pos >= top && cur_pos <= bottom) {
		  nav.find('a').removeClass('active');
		  //sections.removeClass('active');
		  //console.log('active');
		  //$(this).addClass('active');
		  nav.find('a[href="/#'+$(this).attr('id')+'"]').addClass('active');
		}
	  });
	});