php - what is wrong with my bootstrap drop down menu? -


whenever click on item has drop down, doesnt work... know why? first time using php , trying inventory system... have no idea problem here code

    <!doctype html> <html> <head>     <title>servicio de manejo de inventarios</title>     <!-- bootstrap -->     <link rel="stylesheet" type="text/css" href="assets/bootstrap/css/bootstrap.min.css">     <!-- bootstrap theme -->     <link rel="stylesheet" type="text/css" href="assets/bootstrap/css/bootstrap-theme.min.css">     <!-- font awesome -->     <link rel="stylesheet" type="text/css" href="assets/font-awesome/css/font-awesome.min.css">     <!-- custom css -->     <link rel="stylesheet" type="text/css" href="custom/css/custom.css">     <!-- datatables-->     <script type="text/javascript" scr="assets/plugins/datatables/datatables.min.css"></script>     <!-- file input -->     <script type="text/javascript" scr="assets/plugins/fileinput/css/fileinput.min.css"></script>     <!-- jquery -->     <script type="text/javascript" scr="assets/jquery/jquery.min.js"></script>     <!-- jqueryui -->     <link rel="stylesheet" type="text/css" href="assets/jquery-ui/jquery-ui.min.css">     <script type="text/javascript" scr="assets/jquery-ui/jquery-ui.min.js"></script>     <!-- bootstrap js -->     <script type="text/javascript" scr="assets/bootstrap/js/bootstrap.min.js"></script> </head> <body>      <nav class="navbar navbar-default navbar-static-top">       <div class="container-fluid">         <!-- brand , toggle grouped better mobile display -->         <div class="navbar-header">           <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#bs-example-navbar-collapse-1" aria-expanded="false">             <span class="sr-only">toggle navigation</span>             <span class="icon-bar"></span>             <span class="icon-bar"></span>             <span class="icon-bar"></span>           </button>           <a class="navbar-brand" href="#">brand</a>         </div>          <!-- collect nav links, forms, , other content toggling -->         <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">           <ul class="nav navbar-nav">             <li id="navdashboard"><a href="index.php"> <i class="glyphicon glyphicon-list-alt"></i> dashboard </a> </li>             <li id="navbrand"><a href="brand.php"> <i class="glyphicon glyphicon-btc"></i> marca </a> </li>             <li id="navcategories"><a href="categories.php"> <i class="glyphicon glyphicon-th-list"></i> categoria </a> </li>             <li class="dropdown" id="navorder">               <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false"> <i class="glyphicon glyphicon-shopping-cart"> </i> ordenes <span class="caret"></span></a>               <ul class="dropdown-menu">                     <li id="topnavaddorder"><a href="orders.php?o=add"><i class="glyphicon glyphicon-plus"> </i>agregar orden</a></li>                     <li id="topnavmanageorder"><a href="orders.php?o=manord"> <i class="glyphicon glyphicon-edit"> </i>administrar ordenes</a></li>               </ul>             </li>             <li id="navreport"><a href="report.php"> <i class="glyphicon glyphicon-check"></i> reporte </a> </li>           </ul>           <ul class="nav navbar-nav navbar-right" id="navsetting">             <li class="dropdown">               <a href="#" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false"> <i class="glyphicon glyphicon-user"></i> <span class="caret"></span></a>               <ul class="dropdown-menu">                 <li id="topnavsetting"><a href="setting.php"><i class="glyphicon glyphicon-wrench"></i>setting</a></li>                 <li id="topnavlogout"><a href="logout.php"><i class="glyphicon glyphicon-log-out"></i>logout</a></li>               </ul>             </li>           </ul>         </div><!-- /.navbar-collapse -->       </div><!-- /.container-fluid -->     </nav>         <!-- file input -->     <script type="text/javascript" scr="assets/plugins/fileinput/js/plugins/piexif.min.js"></script> <!--se supone que va "canvas-to-blog.min.js" -->     <script type="text/javascript" scr="assets/plugins/fileinput/js/plugins/srotable.min.js"></script>     <script type="text/javascript" scr="assets/plugins/fileinput/js/plugins/purify.min.js"></script>     <script type="text/javascript" scr="assets/plugins/fileinput/js/fileinput.min.js"></script>     <!-- datatables js-->     <script type="text/javascript" scr="assets/plugins/datatables/datatables.min.js"></script>  </body> </html>

because href attribute of elements has dropdown set "#". resolve issue, give valid link example <a href="http://google.com" class="dropdown-toggle" data-toggle="dropdown" role="button" aria-haspopup="true" aria-expanded="false"> <i class="glyphicon glyphicon-user"></i> <span class="caret"></span></a>


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