Dynamic positioning causes the fixed navigation bar to overlay content

I am currently working on designing a single-page website that consists of multiple sections. However, I am encountering an issue where clicking on a navigation bar link causes the page to scroll to the desired section but covers some content in the process.

The problem arises from the fact that the navigation bar only receives static positioning once it scrolls past its original position. You can view my development site at

Below is the code snippet that attempts to add fixed positioning using JQuery. Despite offsetting it by -50px to account for the nav size, the issue persists.

   $(document).ready(function(){
   var offset = $(".navbar").offset().top;     
   $(window).scroll(function() {
         if ($(window).scrollTop() >= offset) {
             $('.navbar').addClass('navbar-fixed-top');

         }
         else {
             $('.navbar').removeClass('navbar-fixed-top');
         }
    });

$('a.page-scroll').bind('click', function(event) {
    var $anchor = $(this);
    $('html, body').stop().animate({scrollTop: $($anchor.attr('href')).offset().top - 50}, 1500, 'easeInOutExpo');
    event.preventDefault();
});
});

If you have any insights or suggestions on how to resolve this issue, please feel free to share them. Any assistance would be greatly appreciated.

Answer №1

Switching from relative to fixed positioning alters the block value of the div from its original height to zero, resulting in the offset problem you are currently facing. To see an example of this issue, check out this fiddle: https://jsfiddle.net/7muk9zhh/5/

The key changes made include:

JavaScript:

$(window).scroll(function() {
    if ($(window).scrollTop() >= offset) {
        $('.navbar').addClass('navbar-fixed-top');
        $("#Main").css("margin-top", $(".navbar").height()); //Adjusts for fixed positioning
    } else {
        $('.navbar').removeClass('navbar-fixed-top');
        $("#Main").css("margin-top", "");
    }
});

$('a.page-scroll').bind('click', function(event) {
        var $anchor = $(this);
        var globOffset = $(".navbar").height(); //Serves as an offset for the fixed element
        $('body').stop().animate({scrollTop: $($anchor).attr('href').offset().top - globOffset}, 1500);
        event.preventDefault();
    });

HTML:

However, there is another issue at hand. The "#home" anchor is being used in the body tag, which results in a return offset of 0 (corresponding to the body element).

In addition, it seems that the custom easing 'easeInOutExpo' necessitates jQuery UI (if it is not functioning, make sure to include it):

<script src="https://ajax.googleapis.com/ajax/libs/jqueryui/1.11.4/jquery-ui.min.js"></script>

I trust this explanation clarifies your query!

Answer №2

To ensure smooth scrolling and proper functionality, utilize the following code snippet:

   $(document).ready(function(){
   var offset = $(".navbar").offset().top;     
   $(window).scroll(function() {
         if ($(window).scrollTop() >= offset) {
             $('.navbar').addClass('navbar-fixed-top');

         }
         else {
             $('.navbar').removeClass('navbar-fixed-top');
         }
    });

 //smooth scrolling effect begins here
   $('a[href^="#"]').bind('click.smoothscroll',function (e) {
       e.preventDefault();

       var target = this.hash,
           $target = $(target);

       $('html, body').stop().animate({
           'scrollTop': $target.offset().top-90 //adjust value as needed 
       }, 1200, 'swing', function () {
           window.location.hash = target;
       });
   });
  //end of smooth scrolling
  });

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