Sending chat messages for the GraphQL API

script.js

// Sending messages
function sendMessage(nickname, message) {
    if (!nickname || nickname == '') {
        nickname = '(nobody)';
    }

    $.post('/api', { query: `mutation { sendMessage(nickname: "${nickname}", message: "${message}")}`}, getChatroom);
}

$('#send').click(function() {
    var nickname = $('#nickname').val();
    var message = $('#message').val();
    sendMessage(nickname, message);
});