> Class zero gets initially set to 40% opacity over 0ms. Upon hover over the > opacity should get set to 100% over 0ms (immediately), but instead the > animation takes the default duration to complete. > > Class one is the same as class zero, but the haver animation takes one > millisecond to execute and works much like class zero was originally > intended.
I haven't looked at the animate code, but the || operator is probably used to assign the default value. The behavior of that operator means that a value of numeric 0 gets the default. If you are using your own variable for the duration and want to make sure the default is never used, just use "|| 1" to make sure it is at least 1 millisecond.
