javascript-date-format-yyyy-mm-dd ソースコード全文
formatDate2.html
<!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 formattedDate = new Date().toISOString().split("T")[0].replaceAll("-", "/"); console.log(formattedDate); </script></body>
</html>