              'Content-Type': 'application/json; charset=UTF-8'
            }
        });
        var res = await response
        document.getElementById("status").innerHTML = res.statusText
    }
</script>

<body>
    <div class="container">
        <div class="row">
            <div class="col-sm-4">
                <h2>Heizung</h2>
            </div>
            <div class="col-sm-8">
                <div class="row">
                    <div class="mb-3">
                        <label for="T1" class="