Single page navigation menu - active indicator

Question

I\'m trying to update the navigation for a single page website using jQuery waypoints.

I want to update the navigation based on the current section in view. It works fi

Answer 1

Try this: your modified example

$(document).ready(function(){
        $('section').waypoint(function(direction) {
          var me = $(this); //added
          thisId = $(this).attr('id');
          $('ul li').each(function(){
            var secondaryID = $(this).attr('class');
            if  ( secondaryID == thisId )
                {
                    $('ul li').removeClass('active');

                    //added
                    if(direction==='up'){
                        me = $(this).prev();
                    }

                    //added
                    if(!me.length){
                        me = $(this);
                    }

                    $(this).addClass('active');
                }
            });
    },{offset: '0'});   
}); 

UPD ok, how about this example:

The idea is:

1) When we hit section N top border, while scrolling down, means active section become section N + 1.

2) When we hit section N top border, while scrolling top, means section N become active.

PS. sorry for my english

Javascript

$(document).ready(function(){
        $('section').waypoint(function(direction) {
            var activeSection = $(this);
            if(direction === 'down'){
                activeSection = $(this).next();
            }
            //activeSection = $(this);
            var sectionId   = activeSection.attr('id');
            $('ul li').removeClass('active');
            $('ul li.' + sectionId).addClass('active');
            console.log(activeSection);
        });
}); 

$('a[href*=#]:not([href=#])').click(function() {
    if (location.pathname.replace(/^\//,'') == this.pathname.replace(/^\//,'') 
        || location.hostname == this.hostname) {

        var target = $(this.hash);
        target = target.length ? target : $('[name=' + this.hash.slice(1) +']');
           if (target.length) {
             $('html,body').animate({
                 scrollTop: target.offset().top - (target.height() / 5)
            }, 500);
            return false;
        }
    }
});