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1
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var navbar = document.querySelector('.navbar'); |
|
2
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var origOffsetY = navbar.offsetTop; |
|
3
|
function onScroll(e) { |
|
4
|
window.scrollY >= origOffsetY ? navbar.classList.add('myfixed') : |
|
5
|
navbar.classList.remove('myfixed'); |
|
6
|
} |
|
7
|
document.addEventListener('scroll', onScroll);
|
