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4 years ago
const loadText = document.querySelector('.loading-text')
const bg = document.querySelector('.bg')
let load = 0
let int = setInterval(blurring, 30)
function blurring() {
load++
if (load > 99) {
clearInterval(int)
}
loadText.innerText = `${load}%`
loadText.style.opacity = scale(load, 0, 100, 1, 0)
bg.style.filter = `blur(${scale(load, 0, 100, 30, 0)}px)`
}
// https://stackoverflow.com/questions/10756313/javascript-jquery-map-a-range-of-numbers-to-another-range-of-numbers
const scale = (num, in_min, in_max, out_min, out_max) => {
return ((num - in_min) * (out_max - out_min)) / (in_max - in_min) + out_min
}