console 命令行工具 X clear

console

let data = [1,2,3,4,5,6];
let odd = data.filter(x => x % 2 != 0);
console.log(odd);

<body>
  <h1>The Fuck</h1>
  <button id = 'btn' onclick='click()'>点击</button>
  <script>
    function click() {
      alert('aaa');
    }
  </script>
</body>