console 命令行工具 X clear
console
<html>
  <head>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
  </head>
  <body>
    <div id="ap">
      <p>{{ counter }}</p>
      <p v-on:mousemove="coordinates">Coordinates: {{ x }} / {{ y }} <span v-on:mousemove="stop">DEAD SPOT</span></p>
    </div>
    <script>
      new Vue({
        el : '#ap',
        data : {
          x : 0,
          y : 0
        },
        methods : {
          coordinates : function (event) {
            	this.x = event.clientX,
              this.y = event.clientY
					},
          stop : function (event) {
            event.stopPropagation()
          }
        }
      })
    </script>
  </body>
</html>