How can i limit rotation in my script?

I need to stop an object from rotating after it has rotated a specific amount of degrees, how can I modify my code to do this? This is my code:

 var target : Transform;
 
 function Update() {
     // Slowly rotate the object around its X axis at 1 degree/second.
     target.Rotate(Vector3.right * Time.deltaTime*10);
 
     // ... at the same time as spinning relative to the global 
     // Y axis at the same speed.
     target.Rotate(Vector3.up * Time.deltaTime, Space.World);
 }

help would be appreciated, thanks.