var text = document.getElementById("msg").innerText
msg = JSON.parse(text)

document.getElementById("btn-leave-session").onclick = async (e) => await fetch('api/leave_session', {
                    method: 'POST', body: JSON.stringify({})
                });
var session = msg.session;
document.getElementById("session").innerText = session["name"];
document.getElementById('label-username').innerText = msg.username;