Javascript simple add class remove class - 


<div onclick="myfunction();"> click me</div> <div id="nav" style="" class="hide">     <ul>         <li>sample</li>         <li>sample</li>         <li>sample</li>     </ul> </div> 
function myfunction (){     if ("show"){         document.getelementbyid('nav').style.display='none';             } else if ("hide"){                 document.getelementbyid('nav').style.display='none';             }     }

onclick click me btn, want show & hide "nav". using addclass remove class.

please me in pure javascript.

thanks.

maybe work better ? 

<div id="btn"> click me</div> <div id="nav" style="" class="hide">     <ul>         <li>sample</li>         <li>sample</li>         <li>sample</li>     </ul> </div>  <script>     var menu = document.getelementbyid('nav');     document.getelementbyid('btn').onclick = function() {         if (menu.classname == "hide"){             menu.classname = "show";         } else {             menu.classname ='hide';         }     } </script>  <style>     .show {         display: inherit;     }     .hide {         display: none;     } </style>

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