类型错误：$ .idleLogout不是函数

Question

jQuery(function($) {
    $.idleLogout({
        logoutSeconds: 30,
        countdownSeconds: 25,
        logoutUrl: null
    });

    $(document).bind('UserActivity.idleLogout UserIdle.idleLogout IdleLogout.idleLogout CancelLogut.idleLogout IdleDialogUpdate.idleLogout', function(e) {
        console.log(e.type, e.namespace, e);
    });
});

使用此代码时出现上述错误