before scroll line1: true
before scroll line2: false
before scroll mousemove count: 1
before scroll pointermove count: 1
before scroll mouseover count: 1
before scroll mouseout count: 0
before scroll stop line1: true
before scroll stop line2: false
before scroll stop mouseover count: 1
before scroll stop mouseout count: 0
after scroll stop line1: false
after scroll stop line2: true
after scroll stop mousemove count: 1
after scroll stop pointermove count: 1
after scroll stop mouseover count: 2
after scroll stop mouseout count: 1