我必須在每個(gè)滾動(dòng)上增加計(jì)數(shù)1。let scrollCount = 0;//initially it would be 0 and after  every scroll up it should increase 1,scrollCount++;在react-native的每個(gè)滾動(dòng)中，遞增計(jì)數(shù)1的功能是什么。//下面的js代碼我知道..但是對(duì)于react-native感到困惑。var scrollCount = 0;           window.addEventListener('mousewheel', function(e){            if(e.wheelDelta<=0 && scrollCount<5){            scrollCount++;            }          else if(e.wheelDelta>0 && scrollCount>1){        scrollCount--;        }         document.querySelector('.number').innerHTML = scrollCount;         });