console 命令行工具 X clear

console

<!DOCTYPE html>
<html lang="en">

<head>
    <meta charset="UTF-8">
    <title>Document</title>
    <script>
        window.onload = function () {
            document.body.innerHTML = "<input id='btn' type='button' value='咸蛋'>"
        }
    </script>
</head>

<body>

</body>

</html>