`; } document.getElementById('saveBtn').onclick = () => { val = document.getElementById('summernote').value; postData('/notepad/index.php', { content: val }) .then(data => { if(!data['ok']) { alert("Not saved!") } }); } async function postData(url = '', data = {}) { const response = await fetch(url, { method: 'POST', headers: { 'Content-Type': 'application/json' }, body: JSON.stringify(data) }); return response.json(); }