()
| 37 | useEffect(() => { |
| 38 | |
| 39 | const handleScroll = () => { |
| 40 | |
| 41 | let scrollPosition = window.pageYOffset; |
| 42 | let windowSize = window.innerHeight; |
| 43 | let bodyHeight = document.body.offsetHeight; |
| 44 | |
| 45 | let diff = Math.max(bodyHeight - (scrollPosition + windowSize) ) |
| 46 | //diff*100/scrollposition |
| 47 | let diffP = (diff * 100) / (bodyHeight - windowSize); |
| 48 | |
| 49 | ref.current.style.transform = `translateY(${-diffP}%)` |
| 50 | |
| 51 | if(window.pageYOffset > 5){ |
| 52 | hiddenRef.current.style.display = 'none' |
| 53 | }else{ |
| 54 | hiddenRef.current.style.display = 'block' |
| 55 | |
| 56 | } |
| 57 | } |
| 58 | |
| 59 | window.addEventListener('scroll', handleScroll) |
| 60 |
nothing calls this directly
no outgoing calls
no test coverage detected