console 命令行工具 X clear

console

function Aay(){}

<html>
    <head>
        <meta name="viewport" content="width=, initial-scale=">
        <meta charset="utf-8">
        <title>
            检测数组
        </title>
        <link rel="stylesheet" href="">
        <script src=""></script>
    </head>
    <body>
        <input type="button" value="点击" id="" class="Aay" onclick="Aay()">
</body>
</html>

*{margin:0;padding: 0;}\
.Aay{
    height: 25px;
    width: 50px;
}