请老师检查代码♥

来源：2-5 编程练习

xcn_aaaa

2022-10-12 22:19:27

<!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>
    <script>
        var s = new Set();
        s.add(1).add(2).add(3);
        s.delete(2);
        console.log(s.size);
        s.forEach(function(value,index){
            console.log(value);
        })
    </script>
</body>
</html>

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