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<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <title>Test Vue Input</title>
</head>
<body>
  <div id="app-input-2">
  <h3>
   Testando eventos : {{message}}
  </h3>
    <input type="text" v-model="message" placeholder="Digite sua mensagem" >
    <button v-on:click="addMessage">Salvar</button>
    <ol v-show="messages">
       <li v-for="item in messages">{{item}}</li>
    </ol>
  </div>
  <script src="https://cdn.jsdelivr.net/npm/vue"></script>
  <script>
  	var app = new Vue({
      el: '#app-input-2',
      data: {
      	message:'',
        messages: []
      },
      methods: {
      	addMessage: function () {
        	this.messages.push(this.message)
        }
      }
    })
  </script>
</body>
</html>