<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
    </head>
    <body>
        
        <script>
            const _isSameSet = (s1, s2) => {
                // 补全代码
                if (s1.size !== s2.size) return false
                return [...s1].every(item => s2.has(item))
            }
        </script>
    </body>
</html>