main.js

App.vue

<template>
    <div id="app">
    
    <component :is="DefaultLayout">
        <router-view></router-view>
    </component>

    </div>
</template>

<script>
import 'bootstrap'

import DefaultLayout from '@/components/DefaultLayout'

export default {
    name: 'app',
    mounted: function () {
        var $loading = $('#ajaxLoading').hide()
        $(document).ajaxStart(function () {
            $loading.show()
        }).ajaxStop(function () {
            $loading.hide()
        })
    },
    components: {
        DefaultLayout
    }

}
</script>

DefaultLayout.vue

<template>
    <div>
    <nav class="navbar navbar-default">
        <div class="container-fluid">
            <div class="navbar-header">
                <!-- Collapsed Hamburger -->
                <button type="button" class="navbar-toggle collapsed" data-toggle="collapse" data-target="#app-navbar-collapse">
                    <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="#">
                    Portal
                </a>
            </div>

            <div class="collapse navbar-collapse" id="app-navbar-collapse">
                <!-- Left Side Of Navbar -->
                <ul class="nav navbar-nav">
                    <li class="dropdown">
                        <a href="#" class="dropdown-toggle" data-toggle="dropdown">Orders</a>
                        <ul class="dropdown-menu" role="menu">
                            <li>
                                <router-link :to="{name: 'hotel-orders'}" class="dropdown-toggle" data-toggle="dropdown">
                                    Hotel Orders
                                </router-link>
                            </li>
                            <li>
                                <router-link :to="{name: 'transportation-orders'}" class="dropdown-toggle" data-toggle="dropdown">
                                    Transportation Orders
                                </router-link>
                            </li>
                        </ul>
                        <li>
                            <router-link :to="{name: 'transports'}">
                                Transports
                            </router-link>
                        </li>
                    </li>
                </ul>
            </div>
        </div>
    </nav>

    <slot>
        This will only be displayed if there is no content
        to be distributed.
    </slot>
    </div>
</template>

<script>
    export default {
        name: 'DefaultLayout'
    }
</script>

gistfile1.txt

// The Vue build version to load with the `import` command
// (runtime-only or standalone) has been set in webpack.base.conf with an alias.
import Vue from 'vue'
import App from './App'
import router from './router'

Vue.config.productionTip = false

/* eslint-disable no-new */
new Vue({
  el: '#app',
  router,
  template: '<App/>',
  components: { App }
})