squirrel/static/js/progress.js
2021-02-25 22:23:58 +01:00

11 lines
No EOL
350 B
JavaScript

var h = document.documentElement,
b = document.body,
st = 'scrollTop',
sh = 'scrollHeight',
progress = document.querySelector('.progress'),
scroll;
document.addEventListener('scroll', function() {
scroll = (h[st]||b[st]) / ((h[sh]||b[sh]) - h.clientHeight) * 100;
progress.style.setProperty('--scroll', scroll + '%');
});