Affix is not working in Bootstrap 4 (alpha)

Question

According to Bootstrap 3 docs I have added following attributes to a navbar:

<nav class="navbar no-margin-bottom" data-spy="affix" data-offset-top="90" >
...
</nav>

After scrolling down the page Bootstrap 4 is not adding class to navbar which is affix. Can anyone tell me how to solve this problem? Bootstrap.js and jQuery.js are working.

Answer 1

Although the affix is removed from Bootstrap in version 4. However, you can achieve your goal through this jQuery Code:

$(window).on('scroll', function(event) {
    var scrollValue = $(window).scrollTop();
    if (scrollValue == settings.scrollTopPx || scrollValue > 70) {
         $('.navbar').addClass('fixed-top');
    } 
});