Microwave stopped working/works again
The fact that the microwave malfunctioned clearly indicates that a damage is done. Judging based on symptoms that you're describing, this a typical short circuit. Now that things have dried up a bit, it might just keep working fine. 

Chances are, corrosion caused by residue liquid will eventually destroy the circuit. But that's not the worst part.

Damage made to electric circuits by liquid can be unpredictable. By all safety standards and guidelines, your microwave is not safe to use. Fair enough, the chances that something really bad would happen are slim, but consequences can be brutal as well (think deadly electric shock or a fire). For your own safety, please, either find a technician and service your microwave, or buy a new one.