var app2 = new Vue({
  el: '#app-2',
  data: {
    message: 'You loaded this page on ' + new Date().toLocaleString()
  }
})

<!-- production version, optimized for size and speed -->
<script src="https://cdn.jsdelivr.net/npm/vue@2"></script>

I'm tired of writing code on JQuery. and I went to VUE

var app3 = new Vue({
  el: '#app-3',
  data: {
    seen: true
  }
})