console 命令行工具 X clear
console
<!DOCTYPE html>
<html lang="en">

<head>
  <meta charset="UTF-8">
  <meta http-equiv="X-UA-Compatible" content="IE=edge">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>

<body>
  <input type="text">

  <script>
    document.addEventListener("paste", function (e) {
      e.preventDefault(); // 阻止粘贴事件
    });
  </script>
</body>

</html>