Javascript does not work in the "create" of CRUD in Laravel 5.5

I have the following structure for the views of a CRUD of categories:

I have javascript libraries in the app view that is in the layouts folder. In all other routes work perfectly. When I enter the category index, the javascript continues to work, but when I enter the category creation it does not work anymore. I realized because I have a drop-down menu that is part of the layout app, which works with javascript and this works well in index but not in the create.

Annex the index code:

@extends('layouts.app')

@section('content')

<div class="container">
    <div class="row">
        <div class="col-md-8 col-md-offset-2">
            <div class="panel panel-default">
                <div class="panel-heading">
                    Lista de Categorias 
                    <a href="{{ route('categories.create') }}" 
                    class="btn btn-sm btn-primary pull-right">Crear</a>
                </div>


                <div class="panel-body">
                    <table class="table table-striped table-hover">
                        <thead>
                            <tr>
                                <th width="10px">ID</th>
                                <th>NOMBRE</th>
                                <th colspan="3">&nbsp;</th>
                            </tr>
                        </thead>
                        <tbody>
                            @foreach($categories as $category)                              
                            <tr>
                                <td>{{ $category->id }}</td>
                                <td>{{ $category->name }}</td>
                                <td width="10px">
                                <a href="{{ route('categories.show', $category->id) }}" class="btn btn-sm btn-default">ver
                                </a>
                            </td>
                            <td width="10px">
                                <a href="{{ route('categories.edit', $category->id) }}" class="btn btn-sm btn-default">editar
                                </a>
                            </td>
                            <td width="10px">
                                {!! Form::open(['route' => ['categories.destroy', 
                                $category->id], 'method' => 'DELETE']) !!}
                                    <button class="btn btn-sm btn-danger">
                                        Eliminar                                    
                                    </button>
                                {!! Form::close() !!}
                            </td>
                            </tr>
                            @endforeach
                        </tbody>
                    </table>
                    {{ $categories->render() }}
                </div>
                </div>  
            </div>
        </div>
    </div>
@endsection

And of the create:

@extends('layouts.app')

@section('content')

<div class="container">
<div class="row">
    <div class="col-md-8 col-md-offset-2">
        <div class="panel panel-default">
            <div class="panel-heading">
                Crear categoría
            </div>

            <div class="panel-body">
                {!! Form::open(['route' => 'categories.store']) !!}

                    @include('admin.categories.partials.form')

                {!! Form::close() !!}
            </div>
        </div>
    </div>
</div>
</div>
@endsection