javascript - Highlighting the sidebar links with scroll -

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i have side bar settings page index. want appropriate links highlight every time scroll different section of page. realize has been asked before, , tried doing told in previous question . looked @ couple of blogs, though code seems quite complicated.

html

        <div id="sidebar">                <nav class="navlinks">                     <ul style="list-style:none" id="sidebar-id">                               <li> <a href="#profile-settings"> profile </a></li>                              <li> <a href="#social-settings"> social media </a></li>                              <li> <a href="#"> logout </a></li>                        /ul>                   </nav>                     </div>  <section id="profile-settings">     <!--some content-->     </section>           <section id="social-settings">     <!--some content-->     </section>

css:

.active {     color:red;     }

js

$(document).ready(function () {      $(document).scroll(function () {         var scroll_top = $(document).scrolltop();         var div_one_top = $('#profile-settings').position().top;         var div_two_top = $('#social-settings').position().top;          if(scroll_top > div_one_top && scroll_top < div_two_top) {             //you past div 1             $('a[href="#profile-settings"]').addclass('active');             $('a[href="#social-settings"]').removeclass('active');         } else if (scroll_top > div_two_top) {             $('a[href="#social-settings"]').addclass('active');             $('a[href="#profile-settings"]').removeclass('active');           }     });      });

when run though, <li> <a href="#profile-settings">profile</a></li> shows active class, constantly, meaning wont change when scroll bottom or top. second li(#social settings) wont have .highlight class added @ all. i'm new javascript , jquery, , grateful help. thank in advance.

you missed < </ul>.when add < /ul>,everything in browser.

adding console.log(div_one_top,div_two_top); console.log(scroll_top); before ifstatement,you can check data console.


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