How to detect if player is jumping or moving?

The humanoid has an event called StateChanged that fires when the humanoid starts doing another activity like jumping, swimming, walking, et cetera. This event returns the old state and the new state as a HumanoidStateType which is an enumeration. For moving, there is a humanoid state type called Running, and for jumping, there is a state appropriately called Jumping.

Humanoid.StateChanged:Connect(function(old , new)
    if new == Enum.HumanoidStateType.Running then
        --Player is running
    elseif new == Enum.HumanoidStateType.Jumping then
        --Player has jumped
    end
end)