SOURCE

const Foo = { template: '<div>foo</div>' }

const Bar = { template: '<div>bar</div>' }

const Baz = { template: '<div>baz</div>' }

const router = new VueRouter({
	routes: [
		{
			path: '/',
			components: {
				default: Foo,
				a: Bar,
				b: Baz
			}
		},
		{
			path: '/other',
			components: {
				default: Baz,
				a: Bar,
				b: Foo
			}
		}
	]
})

new Vue({
	router,
	el: '#app'
})

<script src="https://unpkg.com/vue/dist/vue.js"></script>
<script src="https://unpkg.com/vue-router/dist/vue-router.js"></script>

<div id='app'>
	<h1>Named Views</h1>
	<ul>
		<li>
			<router-link to='/'>/</router-link>
		</li>
		<li>
			<router-link to='/other'>/other</router-link>
		</li>
	</ul>
	<router-view class='view one'></router-view>
	<router-view class='view two' name='a'></router-view>
	<router-view class='view three' name='b'></router-view>
</div>