<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<script src="https://unpkg.com/vue/dist/vue.js"></script>
</head>
<body>
<div id="app">
<p>{{ message }}</p>
<p>{{ count }}</p>
<button v-on:click="count++">+</button>
<button v-on:click="count--">-</button>
</div>
<script>
new Vue({
el: '#app',
data: {
message: 'Hello Vue.js!',
count: 0
}
})
</script>
</body>
</html>
