Event notifications on facebook question?

[Exploremore]

If i joined someone's event that he created on facebook i know that he gets a notification. However, i did it by accident because I was scrolling on my phone and accidentally clicked join. I quickly changed the option to "not going" . Will he still get a notification or will the notification get deleted?

Similarly, if i like a person's status by accident but quickly unlike it, what happens to the notifications?

[Daniel]

When you like Someones Status And than Unlike it the Notifcation will Still Be Displayed but it Wont appear or Show What Status it Was

For the Event if you Changed Him To Not Going than He May Not See the Notifcation But he May Still Get Something not 100% Positive on that One