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add css and class dynamically using jquery

<script>      $(window).on('load', function() {
         // var pathname = window.location.pathname; // Returns path only         var url      = window.location.href;     // Returns full URL         // var origin   = window.location.origin;         var words = url.split('#');         var check=words[1];         // alert(check);         if(check=='how')
         {
            // alert("this is how");            // var element=document.getElementById('how');
            // hownav=display:inline            // how=active            // console.log("yo ho:"+element);            $('#how').addClass('in active');            $('.checkactive4').removeClass('in active');            $("#hownav").css("display", "inline");
            // element.addClass("active");
         }
         if(check=='what')
         {
            $('#what').addClass('in active');            $("#whatnav").css("display", "inline");            // alert("this is what");         }
         if(check=='mission')
         {
            $('#mission').addClass('in active');            $("#missionnav").css("display", "inline");            // alert("this is mission");         }
         if(check=='team')
         {
            $('#team').addClass('in active');            $("#teamnav").css("display", "inline");            // alert("this is mission");         }
         // document.getElementById('')         // alert(check);


         // var pathArray = window.location.pathname.split('/');         // console.log(words);         })
</script>



<body>
<div class="collapse navbar-collapse navbar-left" id="myNavbar">  <ul class="navbar-nav nav" id="myDIV">    <li><a  data-toggle="tab"  class="btn "  href="#mission">OUR MISSION</a><span id="missionnav" style="display:none" class="checkactive"></span></li>    <li><a  data-toggle="tab" class="btn "   href="#how"> HOW WE WORK?</a><span id="hownav" style="display:none" class="checkactive2"></span></li>    <li><a  data-toggle="tab" class="btn"  href="#what">WHAT WE DO?</a><span id="whatnav" style="display:none" class="checkactive3"></span></li>    <li><a  data-toggle="tab" class="btn" href="#team">TEAM</a><span  style="display:none" id="teamnav" class="checkactive4"></span></li>  </ul>
</div>
</body>

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