success: function (data) {
    id = data.last;
    data.messages.forEach(function(element) {
        let msg =
        `<div>
            <p class="chatLine">
                <span class="chatPseudo">${element.pseudo}</span> <span class="chatMessage">${element.message}</span>
            </p>
        </div>`;
        $('#chatWindow').append(msg)
    })
},