Navbar collapse not working properly


#1

When I resize the screen I see the burger option but it's not showing the options upon click
My nav code

<nav class="navbar navbar-default">
		<div class="container-fluid">
			<!-- Brand and toggle get grouped for 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="#/">Codify</a>
			</div>
			<div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
				<ul class="nav navbar-nav">
					<li class="active"><a href="#/item/"><i class="glyphicon glyphicon-plus"></i>New Classified</a></li>
				</ul>
				<form class="navbar-form navbar-right" role="search">
					<div class="form-group">
						<label>Enter Search Term</label>
						<input class="form-control" type="text" placeholder="Search term" data-ng-model="itemFilter">
					</div>
					<div class="form-group">
						<label>Category</label>
						<select class="form-control" data-ng-model="selectedCategory" ng-options="category for category in categories">
						</select>
					</div>
					<button class="btn btn-default" data-ng-click="itemFilter=''; category='';">Clear
					</button>
				</form>
			</div>
		</div>
	</nav>

#2

<nav class="navbar navbar-default">
   <div class="container-fluid">
   <!-- Brand and toggle get grouped for 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="#/">Codify</a>
     </div>
     <div class="collapse navbar-collapse" id="bs-example-navbar-collapse-1">
        <ul class="nav navbar-nav">
          <li class="active"><a href="#/item/"><i class="glyphicon glyphicon-plus"></i>New Classified</a></li>
        </ul>
        <form class="navbar-form navbar-right" role="search">
          <div class="form-group">
             <label>Enter Search Term</label>
             <input class="form-control" type="text" placeholder="Search term" data-ng-model="itemFilter">
          </div>
	  <div class="form-group">
             <label>Category</label>
             <select class="form-control" data-ng-model="selectedCategory" ng-options="category for category in categories">
             </select>
          </div>
         <button class="btn btn-default" data-ng-click="itemFilter=''; category='';">Clear</button>
        </form>
      </div>
    </div>
</nav>