<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
</head>
<body>
<template id="my-component">
<div>hey</div>
</template>
<div id="app">
<my-component></my-component>
</div>
<script src="https://cdnjs.cloudflare.com/ajax/libs/vue/2.0.3/vue.min.js"></script>
<script>
Vue.component('my-component', {
template: '#my-component'
})
new Vue({
el: '#app'
})
</script>
</body>
</html>