javascript - Facing no live responce on change of class of a div element on scrolling with jquery -


i have had read many answers here , tried apply them not working in case. can't find going wrong following code (it example of problem facing):-

 var header = $(".top-navigation");  $(window).scroll(function() {    var scroll = $(window).scrolltop();    if (scroll >= 100) {      header.addclass("top-navigtion1").removeclass("top-navigation");    } else {      header.removeclass("top-navigation1").addclass("top-navigation";    }  });
 .container {  	    width: 600px;  	    height: 1500px;  	    background-color: #000000;      }      .top-navigation {  	    width: 600px;  	    height: 100px;  	    position: fixed;  	    background-color:transparent;  	    z-index: 1501 ;          color: #fff;      }      .top-navigation1 {  	    width: 500px;  	    height: 100px;  	    position:relative;  	    background-color: 'blue';  	    z-index: 1501;      }
<div class="container">    <div class="top-navigation">      <nav>        <ul>          <li><a href="">home</a></li>          <li><a href="">about</a></li>          <li><a href="">contact</a></li>        </ul>      </nav>    </div>  </div>  <script src="https://ajax.googleapis.com/ajax/libs/jquery/1.11.3/jquery.min.js"></script>

please check if works you. fiddle

code

<header class="clearheader"></header> <div class="wrapper"></div>

css: 

.clearheader{  height: 200px;   background-color: rgba(107,107,107,0.66);  position: fixed;  top:200;  width: 100%;  }  .darkheader {height: 100px;}  .wrapper {   height:2000px;  }

jquery:

$(window).scroll(function() {       var scroll = $(window).scrolltop();   if (scroll >= 500) {     $(".clearheader").addclass("darkheader");   }   else {          $(".clearheader").removeclass("darkheader");   } });

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