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<!DOCTYPE html>
<html>
<head>
  <title>Mouse Pointer Position</title>
  <style>
    #app {
      border: black dashed 1px;
      width: 200px;
      padding: 0 20px 20px 20px;
    }
    #app > div {
      width: 160px;
      background-color: lightcoral;
      padding: 20px;
    }
    #app span {
      color: black;
      font-weight: bold;
      font-family: 'Courier New', Courier, monospace;
    }
  </style>
</head>
<body>
<h1>Example: 'S' Key Generates Alert</h1>
<div id="app">
  <p>The 'S' key generates an alert:</p>
  <textarea cols="20" rows="3" v-on:keydown.s="createAlert" placeholder="Start writing.."></textarea>
</div>
<script src="https://unpkg.com/vue@3/dist/vue.global.js"></script>
<script>
  const app = Vue.createApp({
    methods: {
      createAlert(evt) {
        alert("You pressed the 'S' key!");
      }
    }
  })
 app.mount('#app')
</script>
</body>
</html>