fetch(“/wp-content/uploads/make-webhook.php”, { method: “POST”, headers: { “Content-Type”: “application/json” }, body: JSON.stringify({ “申込日”: “2025-07-28”, “チェックイン日”: “2025-08-01”, “予約番号”: “ABC123”, “電話場号”: “090-1234-5678” }) }) .then(res => res.text()) .then(text => console.log(“サーバーの返答:”, text)) .catch(err => console.error(“通信エラー:”, err));