jellyfin-web/src/legacy/dashboard.js

Dashboard.confirm = function(message, title, callback) {
    'use strict';
    require(['confirm'], function(confirm) {
        confirm(message, title).then(function() {
            callback(!0);
        }).catch(function() {
            callback(!1);
        });
    });
};

Dashboard.showLoadingMsg = function() {
    'use strict';
    require(['loading'], function(loading) {
        loading.show();
    });
};

Dashboard.hideLoadingMsg = function() {
    'use strict';
    require(['loading'], function(loading) {
        loading.hide();
    });
};