This feature is experimental. Please share your experiences so we know what to keep or change.
Returns whether the given fragment is both attached to the DOM
and not currently in a destroy animation.
Understanding aliveness
A fragment that is alive can be targeted, and can be discovered by up.fragment functions.
An fragment becomes "unalive" immediately when it is destroyed, or when an ancestor is destroyed.
If the destruction is animated, the fragment is "unalive" while the animation is still playing.
Element state
up.fragment.isAlive(element)
Entered DOM
true
Enter animation playing
true
Still element in the DOM
true
Exit animation playing
false
Removed from DOM
false
See also
The .up-destroying class is automatically assigned to elements in their exit animation.
